Nadia had her MyFitnessPal diary colour-coded.
Green for protein, yellow for carbs, red when fat crept over. She'd read that 40% protein, 30% carbs, 30% fat was the body recomposition ratio. So she'd been hitting it — within five grams daily, for ten weeks straight. Disciplined. Consistent. Tracking everything.
Still losing fat too slowly. Still not seeing much muscle change.
The ratio wasn't wrong exactly. It just wasn't hers. Nadia was sitting at roughly 30% body fat. The macros she needed looked nothing like what someone at 15% needs — and no one had told her that. Almost every article she'd read gave her the same split regardless.
Here's how the best macros for body recomposition are actually set.
Why Percentage-Based Ratios Are the Wrong Starting Point
Macro percentages are mathematically unstable across different calorie totals. A 40/30/30 split on 1,600 calories produces 160g protein, 120g carbs, 53g fat. On 2,400 calories, the same split produces 240g protein, 180g carbs, 80g fat. One of those protein targets is excessive. The other might be adequate. The percentage doesn't tell you which.
Body recomposition macros have to be set in grams — not percentages — because the body responds to absolute amounts, not ratios. Muscle protein synthesis doesn't care that your protein was "40% of calories." It responds to whether you consumed 140 grams or 200 grams.
The other problem with generic splits: they ignore the single most important variable in setting your macros, which is how much stored body fat you currently have. That number changes everything, particularly on the fat and carb side. *(See: How many calories for body recomposition)*
Protein: This Gets Set First, Before Anything Else
Protein is not negotiable and it's not percentage-based. Set it first, in grams per kilogram of bodyweight, then build everything else around it.
The research-backed range for body recomposition is 1.6 to 2.2 grams of protein per kilogram of bodyweight daily, according to a position stand published in the Journal of the International Society of Sports Nutrition. The lower end of that range — 1.6g/kg — represents the minimum at which muscle protein synthesis is reliably supported. The upper end — 2.2g/kg — is where most serious recomposition trainees sit.
In practice, aim for 1.8 to 2.0g/kg as a working target. It's achievable without forcing down protein shakes at every meal, and it keeps you solidly above the threshold regardless of day-to-day tracking variation.
For a 75kg person, that's 135 to 150 grams of protein daily. Concrete number. Fixed in grams. Done — move to the next macro. *(See: Protein intake for body recomposition)*
Honestly, most people who think they're hitting protein are about 40 grams short per day. Log it for a week before assuming.
Fat Intake Changes Based on Your Body Fat Level
Here's where body fat percentage actually matters for macro setting.
People at higher body fat levels — above 25% for women, above 20% for men — carry more stored energy that the body can theoretically mobilise during a deficit. This means the fat intake from diet can be kept at the lower end of the healthy range without creating hormonal issues, because stored fat is doing more of the work.
Dietary fat below 0.5g/kg bodyweight daily starts to suppress testosterone and oestrogen production, according to research reviewed by the National Institutes of Health on dietary fat and hormonal function. Go below that floor and you're trading body composition progress for hormonal suppression. Not worth it.
The practical ranges by body fat level:
Higher body fat (women 28%+, men 22%+): 0.6 to 0.8g of fat per kilogram of bodyweight. The body is already running on stored fat to a greater degree, so dietary fat doesn't need to be especially high to keep hormones stable.
Mid-range body fat (women 22–28%, men 16–22%): 0.8 to 1.0g/kg. Less stored fat available for easy mobilisation. Dietary fat needs a small bump to maintain hormonal function and satiety.
Leaner individuals (women under 22%, men under 16%): 1.0 to 1.2g/kg minimum. Less stored energy reserves mean dietary fat does more hormonal heavy lifting. Cutting fat too low at this body fat level tanks performance and recovery fast. *(See: Body recomposition: calorie deficit or maintenance?)*
Carbs: Fill the Remaining Calories
After protein is set in grams and fat is set in grams, carbohydrates fill the remaining calorie budget. Not the other way around.
Protein calories: grams × 4. Fat calories: grams × 9. Subtract both from your total daily calorie target. Divide the remainder by 4. That's your carb target in grams.
For a 75kg person at 25% body fat targeting 1,900 calories daily:
Protein: 150g = 600 calories. Fat: 60g (0.8g/kg) = 540 calories. Remaining: 760 calories ÷ 4 = 190g carbs.
That's a macro split of roughly 150g / 60g / 190g — which in percentage terms works out to about 32% protein, 28% fat, 40% carbs. Close to a 40/30/30 by coincidence on paper. But it got there by starting from biological needs, not from a percentage target. That distinction matters when the person is 65kg or 95kg instead of 75kg.
Carbs are not the enemy here and they're not optional. Training performance — particularly the progressive overload that drives muscle growth — degrades on very low carbohydrate intakes. Below about 100g of carbs daily, most trainees notice a clear drop in gym output over two to three weeks. Glycogen depletion affects strength. Strength affects training stimulus. Training stimulus affects muscle growth. Pull the carb thread too far and the muscle-building side of recomposition unravels. *(See: Progressive overload for body recomposition)*
Macro Starting Points by Body Fat Range
These are starting targets, not permanent prescriptions. Adjust based on how training and energy levels respond over four to six weeks.
Women 28%+ body fat / Men 22%+ body fat
Protein: 1.8–2.0g/kg | Fat: 0.6–0.8g/kg | Carbs: fill remainder
Priority: Keep protein high, fat at the low-end floor, carbs supporting training.
Women 22–28% / Men 16–22%
Protein: 1.8–2.0g/kg | Fat: 0.8–1.0g/kg | Carbs: fill remainder
Priority: Balanced approach — don't compress fat below 0.8g/kg or training quality drops.
Women under 22% / Men under 16%
Protein: 2.0–2.2g/kg | Fat: 1.0–1.2g/kg | Carbs: fill remainder
Priority: Higher protein and fat floors because stored reserves are lower. Cutting calories too aggressively at this range damages recovery first.
One number that holds across all categories: total daily calorie target doesn't change. The macro distribution shifts within the same calorie budget depending on body fat level. *(See: Body recomposition meal plan on a budget)*
The Tracking Reality Nobody Wants to Hear
Setting the right macros on paper is twenty minutes of arithmetic. Hitting them consistently in real life is the actual work.
MyFitnessPal and similar apps are accurate tools running on inaccurate inputs. User-created food entries in the database are often off by 10 to 20%. Restaurant meals are frequently underlogged because portions vary. Home-cooked food is routinely underestimated when people eyeball instead of weighing.
A digital kitchen scale — an 800-taka piece of equipment — removes most of this error. Weigh protein sources raw, before cooking. Use verified database entries with a green checkmark or barcode scan rather than searching "chicken breast grilled" and guessing from five conflicting entries.
The people who struggle most with macro targets aren't usually under-eating protein because they dislike it. They're under-eating it because they're estimating a 180-gram chicken breast when they're actually eating 120 grams. Over time that gap compounds. *(See: Body recomposition without tracking calories)*
One more thing: hitting macros within ±10% daily is sufficient. Obsessing over exact gram targets day to day creates more psychological friction than it resolves. The weekly average is what drives the biological response. A day at 130g protein instead of 150g doesn't derail anything — a chronic 40-gram-per-day gap over eight weeks does.
The best macros for body recomposition are the ones set from your actual body fat level, built outward from a protein floor, and tracked consistently enough that the weekly average lands where it should. Not the ones copied from a generic chart that was designed for a body nothing like yours.
Macro Setup Quick Reference: Step 1 — Set protein at 1.8–2.0g per kg bodyweight. Step 2 — Set fat at 0.6–1.2g/kg depending on current body fat (leaner = higher fat floor). Step 3 — Fill remaining calories with carbs. Step 4 — Track in grams, not percentages. Adjust after four weeks based on training performance and rate of fat loss.
Frequently Asked Questions
What is the best macro ratio for body recomposition?
There isn't a single best ratio — and that's the point. The right macros depend on your bodyweight, current body fat level, and total calorie target. Set protein first in grams per kilogram (1.8–2.0g/kg), set fat based on body fat level (0.6–1.2g/kg), then fill remaining calories with carbs. The resulting percentage split varies from person to person and is irrelevant — what matters is the gram targets.
Is 40/30/30 good for body recomposition?
It can be, for some people, by coincidence. But for a 90kg person eating 2,200 calories, 40% protein is 220g — which is significantly more than needed and leaves less room for carbs that support training. For a 58kg person, 40% protein at 1,700 calories is only 170g — possibly adequate but tight. The percentage produces wildly different gram totals across different people. Set grams first, let the percentage be whatever it is.
Should I eat more carbs or fat for body recomposition?
After protein is set, the carb vs fat balance depends on training performance and body fat level. Higher body fat = slightly lower dietary fat is fine. Leaner = keep fat higher to protect hormones. Either way, carbs should be high enough to fuel training sessions — below roughly 100g daily, most people notice a gym performance drop that impairs progressive overload. Don't go very low carb for recomposition unless you have a specific reason to.
How do I know if my macros are right?
Four weeks of data. If strength in the gym is increasing or holding steady, protein is adequate. If energy during training is poor, carbs may be too low. If fat loss is minimal after four weeks at a genuine deficit, the calorie total may be too high. Macros are a starting hypothesis — the body's response over four to six weeks is the real answer.
Can I do body recomposition without tracking macros?
Yes, but it's harder to diagnose problems. Consistent high-protein eating (meat, eggs, dairy, legumes at most meals), moderate portions, and training progressively can get you there without a spreadsheet. The tracking pays off most for people who've been "eating well" for months without results — logging for two weeks usually reveals exactly which macro is consistently off. *(See: Body recomposition without tracking calories)*
