What Is Body Recomposition?

Body recomposition — often called "recomp" — is the process of simultaneously building muscle and losing fat. Traditional bodybuilding wisdom says this is impossible: you need a surplus to build muscle and a deficit to lose fat. But modern research and real-world results have proven that under the right conditions, your body can do both at the same time.

Body recomposition is particularly effective for several groups of men: beginners to resistance training, men returning after a long layoff, men who are overfat (above 20% body fat), and men who are detrained or undertrained relative to their genetic potential. If you fall into any of these categories, recomp may be the optimal strategy rather than a traditional bulk or cut cycle.

The catch is that recomp requires more precision with your nutrition than either bulking or cutting alone. Your macronutrient ratios become critically important because you're asking your body to be anabolic (building) and catabolic (burning) at the same time.

Step 1: Calculate Your TDEE

Total Daily Energy Expenditure (TDEE) is the number of calories you burn in a day including all activity. This is your starting point for any macro calculation. Use this formula as a baseline:

BMR (Mifflin-St Jeor equation for men): (10 × weight in kg) + (6.25 × height in cm) − (5 × age in years) + 5

Then multiply by your activity factor:

  • Sedentary (desk job, no exercise): BMR × 1.2
  • Lightly active (1 to 3 days/week exercise): BMR × 1.375
  • Moderately active (3 to 5 days/week exercise): BMR × 1.55
  • Very active (6 to 7 days/week intense exercise): BMR × 1.725

For example, a 30-year-old man weighing 185 pounds (84 kg) at 5'10" (178 cm) who lifts 4 days per week: BMR = (10 × 84) + (6.25 × 178) − (5 × 30) + 5 = 840 + 1,112.5 − 150 + 5 = 1,807.5. TDEE = 1,808 × 1.55 = 2,802 calories.

Step 2: Set Your Recomp Calorie Target

For body recomposition, you generally eat at or slightly below maintenance calories. The specific approach depends on your starting point:

If you're above 18% body fat: Set calories at 10 to 15% below TDEE. You have enough stored energy (body fat) to fuel muscle growth while still losing fat. For our example man: 2,802 × 0.875 = approximately 2,450 calories.

If you're between 12 and 18% body fat: Set calories at maintenance or just 5% below. You have less fat to spare, so a smaller deficit is needed to prevent muscle loss. Target: approximately 2,660 to 2,800 calories.

If you're below 12% body fat: True recomp is very difficult at this level. Consider a slight surplus (5 to 10% above TDEE) for lean gains, or accept a traditional bulk/cut approach.

Step 3: Set Your Protein

Protein is the most critical macronutrient for recomposition. Because you're not eating in a significant surplus, every gram of protein counts for preserving and building muscle tissue. High protein intake also increases satiety and has the highest thermic effect of any macronutrient (your body burns more calories digesting protein).

Recomp protein target: 1.0 to 1.2 grams per pound of bodyweight. For our 185-pound man: 185 to 222 grams of protein per day. If this seems high, start at 1.0 grams per pound and work up gradually.

This is non-negotiable for recomp. Insufficient protein intake will result in muscle loss during the fat-loss component of recomposition, defeating the entire purpose.

Step 4: Set Your Fat

Dietary fat is essential for hormone production, including testosterone. Men who cut fat too aggressively often experience drops in testosterone, libido, and energy — all of which make recomposition harder.

Recomp fat target: 0.3 to 0.4 grams per pound of bodyweight. For our 185-pound man: 55 to 74 grams of fat per day (495 to 666 calories from fat).

Don't go below 0.3 grams per pound unless you have a specific medical reason to do so. Hormonal health should never be sacrificed for marginal caloric savings.

Step 5: Fill Remaining Calories with Carbohydrates

After setting protein and fat, the remaining calories come from carbohydrates. Carbs fuel your training sessions and support recovery — both essential for the "building" side of recomposition.

Using our example (2,450 calories, 200g protein, 65g fat): Protein calories = 200 × 4 = 800. Fat calories = 65 × 9 = 585. Remaining for carbs = 2,450 − 800 − 585 = 1,065 calories ÷ 4 = 266 grams of carbohydrates.

Final macros for our example man: 2,450 calories | 200g protein | 65g fat | 266g carbs.

Advanced Strategy: Calorie Cycling

A powerful strategy for body recomposition is calorie cycling — eating slightly more on training days and slightly less on rest days. This directs more nutrients toward muscle recovery when you need them and creates a larger deficit when your body is less metabolically active.

Training days (4 days/week): Maintenance calories or slight surplus (+100 to 200 cal). Higher carbohydrates, moderate fat. This supports training performance and post-workout recovery.

Rest days (3 days/week): Moderate deficit (−300 to −400 cal below TDEE). Lower carbohydrates, slightly higher fat. This creates the caloric deficit needed for fat loss on days when glycogen demands are reduced.

For our example man, this might look like: Training days: 2,900 cal (200g protein, 55g fat, 338g carbs). Rest days: 2,100 cal (200g protein, 75g fat, 138g carbs). Weekly average: approximately 2,557 cal/day — a modest overall deficit that supports both goals.

Tracking and Adjusting Your Macros

Body recomposition is a slower process than dedicated bulking or cutting, and progress can be subtle. Track these metrics weekly:

  • Bodyweight: Weigh daily at the same time and average weekly. During a successful recomp, weight may stay relatively stable while body composition changes dramatically.
  • Waist measurement: Measure at the navel. A decreasing waist with stable or increasing weight signals fat loss and muscle gain simultaneously.
  • Strength numbers: If your lifts are increasing, you're building muscle. Track key compound lifts (squat, bench, deadlift, overhead press).
  • Progress photos: Bi-weekly photos under consistent conditions are the most reliable indicator of recomposition progress.

If after 3 to 4 weeks you're not losing fat (waist not decreasing), drop calories by 100 to 150. If you're losing weight too fast (more than 0.5% bodyweight per week), increase calories slightly to prevent muscle loss.

Key Takeaways

  • Body recomposition works best for beginners, detrained men, and men above 18% body fat.
  • Eat at or slightly below maintenance calories — typically 0 to 15% below TDEE depending on your body fat level.
  • Prioritize protein at 1.0 to 1.2 grams per pound of bodyweight to support simultaneous muscle building and fat loss.
  • Calorie cycling (higher carbs on training days, lower on rest days) optimizes nutrient partitioning for recomp.
  • Track waist measurement and strength alongside bodyweight — the scale alone won't tell the full recomp story.