How to Lose Body Fat Without Losing Muscle

Losing weight is relatively simple in principle: consume fewer calories than you burn and, over time, your body weight will fall. The harder part is making sure as much of that weight loss as possible comes from body fat rather than muscle.

I've been paying particular attention to this during my own recent cut, having made the mistake in the past of using calorie deficits and lower-carbohydrate approaches that reduced my weight quickly but also compromised muscle and performance.

In this guide, I'll explain the approach I've found most effective for losing body fat while preserving muscle and performance, including calorie intake, protein, carbohydrates, food choices, resistance training, cardio, recovery and how to track whether your diet is actually working.

Although this article is intended as a general guide, I'll refer occasionally to my own recent experience because it gives some useful real-world context.

Since late May I've dropped 6.6kg in weight in around four months while continuing to weight train, run regularly and more recently add HYROX sessions. My strength in the gym has remained broadly stable, I've been setting my best ever 5K and 10K race times, and have done a much better job of maintaining muscle and maximizing the loss from fat stores than I have done in the past by following the structure outlined in this article.

The exact calories, bodyweight and training volume that work for me wouldn't necessarily be right for somebody else. The useful part is the underlying approach: lose weight at a controlled rate, keep protein and resistance training high enough to support muscle retention, and adjust the diet around the demands of your own training.

 

The First Essential: Create a Calorie Deficit - But Don't Make It Too Large

 

No matter which diet you follow, losing body fat ultimately requires an energy deficit. Over time, you need to consume fewer calories than your body is using.

Where people often go wrong is assuming that a larger deficit must automatically be better. If your only objective is to make the number on the scales fall as quickly as possible, eating dramatically less will certainly speed things up. But if you're trying to retain muscle, strength and sporting performance at the same time, the goal should be to use enough of a deficit to produce steady fat loss without making recovery unnecessarily difficult.

That has probably been the biggest difference with my approach this time. Instead of trying to make the scales fall as quickly as possible, I've deliberately prioritised a rate of loss that still allows me to train and recover well, realizing that this would require a more sustained, longer period of calorie deficit than I've used before.

Rather than relying purely on a calorie calculator or the estimated expenditure from my watch, I use MacroFactor to track both my food intake and my weight trend. At the moment it estimates that I'm running an average deficit of around 397 calories per day, with a typical weight-loss rate of approximately 0.36kg per week. The change in scale and trend weight is shown below:

That's not dramatic progress from one week to the next, but over several months it adds up. More importantly, it has been a rate of loss that I've been able to combine with demanding training without seeing my performance collapse.

For someone trying to preserve muscle, that's a much more useful measure of success than simply asking how quickly the scales are moving.

 

Why Tracking Your Calories Makes Such a Difference

 

You can certainly lose body fat without using an app, but accurate tracking makes the process considerably easier.

Most of us aren't particularly good at estimating how many calories we eat. Portions gradually become larger, cooking oils and sauces get forgotten, snacks don't feel significant enough to count and weekend food or drinks can easily erase much of the deficit created during the week. Many people drastically underestimate how many calories they are actually consuming.

An app such as MacroFactor gives an objective record of what you are actually eating rather than what you think you are eating. More importantly, it compares that intake with changes in bodyweight over time and continually updates its estimate of energy expenditure.

That doesn't make the numbers perfect, but it gives you something much more useful than guessing.

If your weight trend is falling at roughly the intended rate and your training performance, recovery and hunger remain manageable, there's usually little reason to cut calories further simply because you could lose weight faster.

Likewise, if your weight trend stops moving for several weeks, you have actual data on which to base a small adjustment rather than immediately slashing hundreds of calories from your diet.

 

How Large Should Your Calorie Deficit Be?

 

There isn't one perfect calorie deficit for everybody. Your bodyweight, body fat level, activity, training volume and how lean you're already becoming all matter.

As a general principle, the leaner and more active you are, the more cautious I'd be about creating a very large deficit. Someone carrying substantial excess body fat can usually tolerate faster weight loss much better than an already-lean person trying to remove the last few kilograms while continuing to train hard.

For a more detailed look at how large a deficit you can use while trying to preserve muscle, we've covered that separately in our guide to the maximum calorie deficit without muscle loss.  This article is based on the 'rule of 22', which I think does give a useful indicative maximum amount of calorie deficit to aim for.  In my case I've stayed comfortably under that recommended limit.

My own experience has convinced me that the fastest possible rate of weight loss is rarely the best target when muscle retention matters. A moderate deficit that you can sustain while continuing to train well is far more useful than an aggressive diet that gets you lighter quickly but leaves you weaker, flatter and performing worse.

 

Keep Protein High to Help Preserve Muscle

 

Once you've established a sensible calorie deficit, protein is probably the next thing I'd prioritise.

When calories are plentiful, maintaining muscle is relatively straightforward if you're training properly. During a calorie deficit, however, your body has less energy available and the risk of losing lean tissue increases. Keeping protein intake high gives you a much better chance of retaining the muscle you've already built while body fat comes down.

For someone who resistance trains and is dieting, a practical target is generally around 1.6-2.2g of protein per kilogram of bodyweight per day. You don't necessarily need to push to the top of that range, but there's a strong argument for keeping protein relatively high when you're leaner, training hard or using a meaningful calorie deficit.

My current target is 2g per kilogram, which has been a practical target for me throughout this cut.

It's also worth remembering that more protein isn't automatically better indefinitely. Once you're eating enough to support muscle retention, continually adding more protein simply takes calories away from carbohydrates and fats that may also be useful.

That's particularly relevant if athletic performance matters. Rather than trying to maximise protein at the expense of everything else, I prefer to establish a sufficiently high protein target first and then use the remaining calories to support training and recovery.

Protein powder can be very useful here. It's a convenient way to add 20-30g of high-quality protein without a large number of additional calories.

The important thing is to make protein a priority rather than an afterthought. Set your daily target first, hit it consistently, and then organise the rest of your diet around the calories you have left.

 

Don't Cut Carbohydrates Too Low If Performance Matters

 

Carbohydrates are probably the part of my current diet that has been the most different on this current cut.

In the past I've used much lower-carbohydrate diets successfully for reducing bodyweight, but I've also found that they come with a significant downside: training performance suffers. That's manageable when most of the exercise revolves around weight training, but it's much harder to get away with if your training involves running and HYROX like mine currently does.

Early in this cut I pushed carbohydrates too low and noticed it quite quickly in my running. Sessions felt harder than they should have and I didn't feel as well fuelled. Increasing carbohydrates a little improved that without preventing fat loss, provided my overall calorie intake remained within the planned deficit.

That became even more obvious when I started HYROX. Those sessions combine repeated high-intensity efforts with running and can last around an hour, so arriving under-fuelled makes a noticeable difference. I quickly found out that not fuelling adequately before a HYROX session leads to a certain amount of additional suffering.  I also would feel lightheaded and shaky when carbs were too low.

I've now become much more deliberate about putting carbohydrates around demanding training sessions. Before HYROX, for example, I've found that a meal of Cream of Rice with a banana and a protein shake, followed by an energy gel shortly before training, leaves me far better fuelled than trying to get through the session on my normal lower intake.

Importantly, those additional carbohydrates haven't stopped my bodyweight trend continuing downwards and I think most likely having adequate energy supply for training has a muscle sparing effect.

That's an important point because carbohydrates are sometimes treated as something that needs to be removed when you're trying to get lean. They don't. Fat loss still comes primarily from maintaining an overall calorie deficit. If carbohydrates help you train harder, maintain performance and recover better, they can be extremely useful within that calorie target. And when enough energy is available from carbohydrates, there is less pressure on the body to use amino acids from muscle tissue as an energy source.

My current MacroFactor setup uses a balanced approach, with roughly 38% of calories from carbohydrate, 32% from protein and 30% from fat. That isn't a ratio I'd prescribe universally, but it works reasonably well for the mix of resistance training, running and HYROX I'm currently doing.  40:40:20 is a very popular and commonly used ratio.

I also deliberately allow slightly more food, especially carbohydrates, on Friday and Saturday because I normally run a hard 5K on Saturday. Again, the objective isn't to keep every day identical - it's to manage the weekly calorie deficit while still having enough energy to perform when it matters.

If your only goal is losing weight, you can certainly reduce carbohydrates more aggressively. But if you also want to retain strength, run well or perform in demanding sports, I'd be very cautious about cutting them simply for the sake of making your diet look more restrictive.

 

Choose Foods That Make the Diet Easier to Stick To

 

Once calories and protein are in place, food choice becomes less about finding "fat-burning" foods and more about making the diet easier to sustain.

For me, satiety has been one of the biggest differences between this cut and some I've done in the past. I haven't been particularly hungry most of the time, and I think a large part of that comes down to choosing foods that give me plenty of protein and volume for the calories.

One change I've found particularly useful is breakfast. In the past I've often had whey protein with porridge, which is perfectly nutritious, but personally I don't find it especially filling.

More recently I've been having three eggs alongside a high-protein yoghurt, with a banana on training days. That works much better for me. It gives me a substantial amount of protein - around 50g - early in the day, keeps me fuller for longer and makes it easier to hit my overall protein target without feeling as though I'm trying to catch up later.

That's a good example of something I think matters far more than following somebody else's perfect meal plan: find foods that keep you satisfied and fit naturally into your calorie target.

Other foods to favour while cutting include lean meat, poultry and fish, potatoes, fruit, vegetables, high-protein dairy products and meals built around relatively large amounts of lower-calorie whole foods. Potatoes in particular can be very useful because they provide plenty of volume and are often much more filling than foods that deliver the same calories in a smaller portion.

Protein powder is also useful, especially on days when hitting your protein target from food alone would be inconvenient. It's an efficient way of adding high-quality protein without a large amount of additional carbohydrate or fat and mixing up a quick shake takes very little time or effort.

That said, liquid calories are generally less filling than solid food, so I wouldn't build the entire diet around shakes. They are most useful around training or as a convenient way of filling a gap in daily protein intake.

It's also worth leaving room for foods and drinks you actually enjoy.

For instance I haven't completely removed alcohol during this cut. I'd almost certainly make slightly faster progress if I did, but I do enjoy having a drink and wanted the diet to remain sustainable rather than unnecessarily restrictive. So long as I limit the frequency and number of drinks, and stay within my macros I don't think it has been detrimental to my progress. I've also started using alcohol-free beer more often. I've never previously been a fan, but some of the newer options are much better than they used to be. Corona Cero, for example, is only around 56 calories per bottle and gives me an easy way to enjoy something similar without using up as much of my calorie allowance.

The key point is that a successful cutting diet doesn't need to consist entirely of chicken breast, broccoli and foods you don't particularly enjoy. The better approach is to build most of your diet around filling, nutrient-dense foods while leaving enough flexibility that you can realistically continue eating that way for months rather than days.

The best foods for fat loss are ultimately the ones that help you stay within your calorie target, hit your protein requirement and feel satisfied enough to keep going.

 

Supplements That Can Help During a Cut

 

Supplements can certainly make a cutting phase easier, but are best viewed as supporting tools rather than the foundation of the diet.

If calories, protein intake, training and recovery aren't in place, no supplement is going to compensate for that. Once those basics are covered, however, there are a few products I find genuinely useful.

 

Creatine

 

Creatine supplements would be near the top of my list. The aim during a cut is to maintain as much strength and training performance as possible, and creatine is one of the best-supported supplements for helping with repeated high-intensity exercise and resistance training.

I wouldn't stop taking creatine simply because you're dieting. It may cause a small increase in scale weight through additional water stored within muscle, but that isn't body fat and doesn't mean your cut has stopped working.

 

Protein Powder

 

A good protein powder can make hitting a high daily protein target considerably easier without adding many calories. I use whey regularly for convenience, but I still prefer most of my protein to come from ordinary food because I find solid meals more filling.

 

Caffeine and Pre-Workout

 

Dieting can reduce energy and motivation, so caffeine or a good pre-workout can be useful before demanding training sessions.

I use pre-workout myself, particularly for HYROX and harder sessions, but there is an obvious trade-off: too much caffeine - especially later in the day - can interfere with sleep. If better training comes at the cost of significantly worse recovery, you've probably gained very little overall.

 

EAAs

 

Essential amino acids can be useful around training, particularly if you're training fasted or haven't eaten much protein beforehand. However, if you're already consuming plenty of complete protein throughout the day, I wouldn't regard EAAs as essential.

They're very much an optional extra rather than something I'd prioritise ahead of meeting your overall protein target.

 

Carbohydrate Supplements

 

Products such as Cream of Rice, carbohydrate drinks and energy gels aren't fat-loss supplements, but they can still be very useful during a cut if athletic performance matters.

I've used all three during this diet. Cream of Rice has become particularly useful before demanding sessions because it's easy to digest and gives me a predictable source of carbohydrate without needing a very large meal to digest before training.

This is another example of why I'd rather use calories strategically around training than simply try to eat as little as possible all day.

 

What About Fat Burners?

 

Thermogenic products can provide a small additional boost, usually through stimulant ingredients such as caffeine, and some people find that they also help with energy or appetite.

But I would keep expectations realistic. A fat burner is not going to create meaningful fat loss if your diet isn't already producing a calorie deficit.

If you enjoy using one and tolerate stimulants well, it may be a useful extra. I just wouldn't put it anywhere near the top of the priority list.

 

If I were keeping things simple, I'd prioritise creatine and enough protein first, then use caffeine or carbohydrate supplements where they genuinely improve training. Everything else is optional.

 

Keep Weight Training Heavy Enough to Give Your Body a Reason to Keep Muscle

 

If the goal is to lose body fat without losing muscle, resistance training remains essential.

When calories are reduced, your body has less energy available for recovery. That doesn't mean you should stop training hard - if anything, continuing to challenge your muscles is one of the clearest signals that the tissue is still needed.

Where I think people can go wrong is trying to combine a calorie deficit with enormous amounts of resistance-training volume. During a cut, the objective shouldn't be to see how much work you can survive. It should be to provide enough high-quality stimulus to maintain strength and muscle while still recovering properly.

My own preference has always leaned towards relatively low-volume, high-effort training when trying to reduce body fat. Approaches associated with people like Dorian Yates, or programmes such as MAX-OT, appeal to me because they prioritise challenging weights and hard, high-effort working sets without requiring huge amounts of volume.

I'm not suggesting everybody needs to follow one of those systems exactly, or that low-volume training is universally superior. The broader principle is to keep the important work challenging while avoiding unnecessary sets that add fatigue without much additional benefit.

Earlier in this cut I was using an upper-body, lower-body and full-body split. Once I added HYROX training twice a week, that became too much for me to recover from properly, particularly because HYROX already includes a lot of work for the legs and shoulders.

I've since reduced my resistance training to a straightforward upper-body session and lower-body session each week. Combined with running and HYROX, that has been enough for me to maintain broadly the same training weights while reducing my overall recovery burden. 

That doesn't mean two weight-training sessions per week will be optimal for everyone. Someone doing very little other exercise could comfortably recover from more. For those who don't do hybrid style training or running, three or four weight training sessions a week would be tolerable so long as they are not too lengthy or high in volume. The important thing is to look at your total training load rather than treating weight training, cardio and sport as completely separate activities.

If strength starts falling rapidly, soreness never seems to disappear and every session feels worse than the last, I'd be reluctant to simply add more training. Those can be signs that recovery is becoming the limiting factor.

During a cut, the priority should be to keep resistance training challenging enough to maintain strength and muscle, while trimming any volume that you can no longer recover from properly.

 

Use Cardio to Help Create the Deficit - But Don't Let It Compromise Recovery

 

Cardio can be extremely useful during a cut, but it's another area where more isn't automatically better.

The obvious benefit is that increasing activity raises energy expenditure, allowing you to create part of your calorie deficit through movement rather than relying entirely on eating less. That can make dieting easier, particularly once calories are already fairly low.

However, different types of cardio come with very different recovery costs.

I currently run two or three times per week and also do two HYROX sessions. That contributes a significant amount to my weekly energy expenditure, but I wouldn't necessarily choose running as my main form of cardio if fat loss and body composition were my only goals.

I run because I want to be a better runner. I'm trying to improve my 5K and 10K times, so the impact, muscular fatigue and recovery demands are worthwhile for me. If I just wanted to burn additional calories while preserving as much recovery capacity as possible for weight training, I'd probably favour more lower-impact steady-state activity.

Even with running performance as one of my goals, I normally limit myself to one sustained hard run each week. My other running sessions generally are either an easier longer run or interval work, where the faster efforts are broken up by recovery periods.

Walking, incline treadmill work, cycling or other relatively easy aerobic exercise can increase calorie expenditure without creating the same level of fatigue that repeated hard running sessions can produce. For many people, spending longer at a comfortable Zone 2-style intensity is therefore a very practical option during a cut.

Higher-intensity interval training can also be useful, particularly for people who are already fit and prefer shorter, harder sessions. The downside is that it adds more fatigue, so I'd be cautious about layering large amounts of HIIT on top of hard resistance training while calories are restricted.

HYROX sits somewhere between those two extremes. The combination of running, sled work, rowing, SkiErg, lunges and other functional movements creates a substantial whole-body workload. Since adding HYROX, my estimated daily energy expenditure has risen noticeably, with individual sessions often accounting for roughly 650-700 calories.

Interestingly, the two periods in my life when I've become leanest have both involved this kind of mixed training. Years ago it happened while I was regularly training in MMA, and more recently I've seen something similar with HYROX. Both types of training feel quite similar in terms of effort, heart rate and stimulus - not all-out maximal efforts but sustained moderate to high intensity for around an hour.

That's only my own experience, and I wouldn't claim that hybrid training has some unique fat-burning effect. The simpler explanation is probably that these activities create a large amount of total weekly work/calorie expenditure.

 

What About Steps and General Daily Activity?

 

It's also worth remembering that exercise sessions aren't the only way to increase energy expenditure. Walking more, taking the stairs and generally spending less of the day sitting can all contribute without adding much recovery burden. NEAT (Non Exercise Activity Thermogenesis) is an important factor in total daily calorie burn and is very different for somebody who works a desk job versus someone who does manual work for instance.

Having a daily step target is a popular trend in recent years. I experimented with trying to hit 10,000 steps every day and taking short walks after meals (another, more recent popular advice trend) but I didn't personally notice a dramatic difference to my fat-loss rate.

For someone who currently does very little structured exercise though, increasing daily walking could make a much bigger difference. It's one of the easiest ways to increase total activity without making every day feel like another workout.

The important thing is to consider your total training and activity load. If you're already lifting weights, running several times per week and doing another demanding sport, adding more cardio because the scales aren't moving fast enough may not be the smartest solution.

Use cardio and activity to support the calorie deficit, but keep enough recovery capacity to maintain your strength, muscle and training quality. Fat loss is the goal - not seeing how much exercise you can survive.

 

Recovery Matters More When Calories Are Lower

 

One of the easiest mistakes to make during a cut is to increase activity at exactly the same time as you're reducing the energy available for recovery.

You may be eating less, adding cardio, trying to maintain your normal weight training and perhaps doing additional sport on top. Each individual part might be manageable, but together they can eventually become too much.

That's why I think rest becomes increasingly important as a diet progresses. I deliberately include days where I'm not doing anything particularly demanding rather than feeling that every day needs to contribute additional calorie expenditure.

I also think it's useful not to use all of your tools at once. Many people go straight in with a calorie deficit and increased training load from day one, whereas in my opinion its better to introduce changes gradually.  For instance decreasing calories first to get the ball rolling with losing weight, and only increasing activity once progress slows.

Sleep matters just as much. Poor sleep can make training feel harder, increase appetite and make sticking to a calorie target more difficult. If you're already asking your body to recover from hard training on reduced calories, consistently cutting sleep as well is unlikely to help.

I've noticed this quite clearly in myself when I've pushed dieting or training too aggressively in the past. I'll sometimes wake during the night feeling unusually hungry, shaky or strangely wired despite being tired. I can't say with certainty what's causing that - stress hormones such as cortisol may be part of the picture - but for me it's been a useful sign that the combination of training load and calorie restriction has gone too far.

I've experienced much less of that during this cut, which I think is another indication that the more moderate approach has suited me better.

 

Watch for Signs That Recovery Is Slipping

 

No single bad workout or poor night's sleep means your diet is too aggressive, but I'd pay attention if several things begin happening together.

Persistently worsening gym performance, unusually heavy legs, poor sleep, constant soreness, irritability, low motivation or hunger becoming increasingly difficult to control can all be signs that something needs adjusting.

That adjustment doesn't necessarily have to mean abandoning the diet. Sometimes reducing training volume, adding a rest day, moving a little more food around your hardest sessions or simply accepting a slightly slower rate of weight loss is enough.

Short breaks from strict tracking can also be useful. I've had a couple of periods of around four or five days away from normal macro tracking while travelling or on holiday. Prolonged energy restriction can lead to some reduction in energy expenditure as bodyweight falls and the body adapts, but that doesn't mean your metabolism has become permanently damaged. Short breaks may be useful for adherence and recovery, but I wouldn't rely on them as a way of magically "resetting" metabolism.

 

Can Sleep Supplements Help?

 

They can be useful for some people, but I wouldn't use supplements to try to compensate for an obviously excessive training load, very high caffeine intake or an unnecessarily severe calorie deficit.

Products designed to support sleep and relaxation can have a place once those basics are addressed, particularly if you train in the evening and find it difficult to switch off afterwards. But I'd still treat sleep supplements as the final piece of the puzzle rather than the first solution.

When calories are restricted, recovery becomes a limited resource. Train hard enough to preserve muscle and performance, but give your body enough rest and sleep to actually recover from that training.

 

Track the Trend, Not Individual Weigh-Ins

 

Fat loss is much easier to manage when you have good data, but it's also very easy to react too strongly to individual measurements.

Bodyweight can fluctuate significantly from one day to the next for reasons that have very little to do with body fat. Carbohydrate intake, glycogen, water, sodium, food still being digested and even the timing of your previous meal can all move the scales.

That's why I prefer weighing regularly under similar conditions and focusing on the overall trend rather than any individual number.

I normally weigh myself in the morning, before eating or drinking, which makes the measurements as consistent as reasonably possible. MacroFactor then uses those weigh-ins to calculate a trend weight, smoothing out much of the day-to-day noise.

Over the last 90 days the day-to-day readings have moved around considerably, but the underlying trend has remained clearly downward.

I've also seen obvious short-term increases after deliberately eating more carbohydrate before races. Before a recent 10K race, for example, increasing carbohydrate intake produced a noticeable bump in scale weight. That doesn't concern me because replenishing muscle glycogen also increases the water stored alongside it.

For the same reason, I expect my bodyweight to rise somewhat when I eventually finish the cut and return to a higher maintenance intake. If I regain 1-2kg fairly quickly through additional glycogen, water and food volume, that wouldn't mean I'd suddenly regained 1-2kg of body fat.

This is one of the reasons I'd strongly recommend looking at trends rather than celebrating your lowest-ever weigh-in or panicking about a sudden increase.

 

What About Body Fat Scales?

 

I use body-composition scales as another way of monitoring progress, but I wouldn't treat the body-fat percentage they display as an exact measurement.

Most consumer body-fat scales use bioelectrical impedance, and the result can change according to hydration, glycogen levels and other factors. That means the absolute number may not perfectly reflect your true body-fat percentage.

Where I think they can still be useful is for tracking direction over time. If you use the same scales under similar conditions and the estimated body-fat percentage is gradually trending down over several months, that can add another useful piece of information alongside bodyweight and visual changes.

The same applies to estimated muscle or lean mass. If carbohydrates and glycogen fall during a diet, some of the reduction shown as "lean mass" may reflect glycogen and associated water rather than actual loss of muscle tissue.

That's why I wouldn't judge muscle retention from a smart scale alone.

 

Use More Than One Measure of Progress

 

Some of the clearest evidence that the cut is working can come from changes that don't require any technology at all.

When your abs become more visible, your face is noticeably leaner and you see more vascularity through your shoulders and arms during training these are all key indicators of progress. At the same time, if the weights you are using in the gym are staying roughly the same or even increasing then that's a positive sign that you are maintaining muscle tissue.

Before-and-after photographs can be extremely useful for those who wish to take them. Try to take them under broadly similar lighting, at a similar time of day and from the same angles. Changes that are difficult to notice from one morning to the next can become very obvious when photographs are compared several weeks apart.

Waist measurements can also be useful, particularly if bodyweight is moving slowly. If your waist is becoming smaller while strength remains relatively stable, that's generally a much more encouraging sign than simply seeing the lowest possible number on the scales.

And if budget allows, more sophisticated body-composition testing can provide another reference point and is far more easily available and affordable these days than in the past.

 

Let Performance Be Part of the Feedback

 

I also think training performance is an underrated way of judging whether a cut is being managed well.

If bodyweight is falling, visual body fat is decreasing and you're broadly maintaining your resistance-training loads, that's a very different situation from losing weight rapidly while strength collapses. If you take part in performance based sports like running or HYROX and you are maintaining or improving your results there then that's further strong evidence you are doing a good job with your body re-composition.

I'd therefore track bodyweight, weight trend, photographs, waist size, body-fat estimates and training performance together. None is perfect on its own, but collectively they give you a much clearer picture of whether you're genuinely losing fat while preserving muscle.

 

Final Thoughts

 

If your goal is to lose body fat while retaining as much muscle as possible, I'd focus on getting the fundamentals right rather than looking for shortcuts. Create a sensible calorie deficit, eat enough protein, keep resistance training challenging, use carbohydrates to support demanding exercise and add cardio or activity without overwhelming your ability to recover.

Then monitor what is actually happening. Bodyweight, weight trend, photographs, waist measurements, body-fat estimates and training performance all tell you something different.

Most importantly, remember that the goal isn't simply to become lighter.

A successful cut should leave you leaner while preserving as much of the strength, muscle and performance you had before you started.  Nobody wants to end their weight loss plan with just a smaller version of the body they already had - you want to see most of your lean mass retained and a clear drop in body fat percentage so that you truly re-shape and improve your physique, fitness and health.