A 10% energy deficit doubles fat loss without sacrificing muscle gain in trained lifters.
Original: Maingaining Is a Waste of Time (New Study)
TL;DR
Research indicates that while maingaining can lead to body recomposition, a moderate energy deficit is more efficient for fat loss.
Quick Answer
The study shows that maingaining (targeting 0% energy deficit) does lead to fat loss and muscle gain in trained lifters, confirming it can work for body recomposition. However, a 10% energy deficit resulted in twice the fat loss (2.9 kg vs 1.4 kg) with equal muscle gain, making cutting more time-efficient. Despite the title's claim, maingaining isn't ineffective—but for fat loss, a moderate deficit is significantly faster.
Claims (10)
1. If you're someone who lifts weights regularly, whether you're eating more or fewer calories than your body needs is one of the biggest factors in how fast you gain muscle or lose fat.
2. The more calories you burn compared to what you eat, the more fat you'll lose — it's like a math equation for your body.
3. Having someone guide and check in on your exercise and eating habits helps you stick with it, try harder, and track your food more accurately.
4. If you're an experienced lifter, keeping your calories steady won't change your body much. To lose fat or gain muscle, you need to eat less or more than your body needs, on purpose.
5. Even super-fit athletes can gain muscle and lose fat at the same time—if they do the right things with their diet and training.
6. People told to eat just enough to stay at their current weight often end up eating too little without meaning to, creating a calorie shortfall.
7. If you have more body fat, you can safely eat fewer calories to lose fat without losing muscle, but if you're already lean, you need to be more careful with how much you cut your calories.
8. If you're someone who lifts weights regularly, cutting your calories by 10% helps you lose about twice as much fat as eating just enough to maintain your weight — and you’ll still gain the same amount of muscle and strength.
9. You can't say protein alone changes your body shape if other things like workout coaching and overall diet are different between people in the study.
10. Fit people might be able to lose fat and gain muscle at the same time, even if they're not eating more or less than they burn—especially over a 10-week period.
Key Takeaways
- •Problem: It's hard to lose fat and gain muscle at the same time, especially if you've been working out for a while.
- •Core methods: Maingaining (eating at maintenance calories), Cutting (eating 10% below maintenance calories), High-protein diet, Supervised resistance training
- •How methods work: Maingaining gives your body just enough energy to possibly build muscle without losing fat quickly; cutting creates a calorie deficit to burn fat faster while protein and training help keep or build muscle; supervision ensures people stick to the plan.
- •Expected outcomes: Both maingaining and cutting can help you gain about 1 kg of muscle in 10 weeks, but cutting helps you lose nearly 3 kg of fat—more than double the fat loss compared to maingaining.
- •Implementation timeframe: Results were measured over 10 weeks, so noticeable changes can be expected within 2–3 months with consistent effort.
Overview
The central problem addressed is whether trained lifters can achieve simultaneous fat loss and muscle gain—positive body recomposition—through maingaining (eating at energy maintenance). The solution tested was a direct comparison between a maingaining protocol (targeted 0% energy deficit) and a cutting protocol (targeted 10% energy deficit), both combined with resistance training and high protein intake. The study aimed to determine which approach yields superior body composition changes over 10 weeks, particularly in individuals with moderate body fat levels (some in the 20%+ range). Results clarify the role of energy balance in recomposition and challenge assumptions about the necessity of energy surplus for muscle growth in trained lifters.
Key Terms
How to Apply
- 1.Step 1: Determine your maintenance calorie level using a validated calculator or metabolic testing, then set a target of either 0% deficit (maingaining) or 10% deficit (cutting) based on your goal.
- 2.Step 2: Consume a high-protein diet (exact amount not specified, but implied to be sufficient for muscle preservation, likely ≥1.6g/kg body weight) distributed across meals with attention to meal frequency and fatty acid balance.
- 3.Step 3: Perform supervised resistance training 3–5 times per week with progressive overload, ensuring proper form and effort to maximize muscle stimulation.
- 4.Step 4: Track your food intake and training performance consistently to maintain adherence and adjust based on progress.
- 5.Step 5: Reassess body composition every 4–5 weeks using reliable methods (e.g., DEXA or ultrasound) to monitor fat loss and lean mass changes and adjust energy intake accordingly.
Following these steps for 10 weeks will likely result in approximately 1 kg of lean mass gain. If in a 10% energy deficit, you can expect to lose about 2.9 kg of fat; if maingaining, expect around 1.4 kg fat loss. Muscle gains will be similar, but fat loss will be significantly faster with the deficit.
Studies from Description (1)
Claims (10)
1. If you're someone who lifts weights regularly, whether you're eating more or fewer calories than your body needs is one of the biggest factors in how fast you gain muscle or lose fat.
2. The more calories you burn compared to what you eat, the more fat you'll lose — it's like a math equation for your body.
3. Having someone guide and check in on your exercise and eating habits helps you stick with it, try harder, and track your food more accurately.
4. If you're an experienced lifter, keeping your calories steady won't change your body much. To lose fat or gain muscle, you need to eat less or more than your body needs, on purpose.
5. Even super-fit athletes can gain muscle and lose fat at the same time—if they do the right things with their diet and training.
6. People told to eat just enough to stay at their current weight often end up eating too little without meaning to, creating a calorie shortfall.
7. If you have more body fat, you can safely eat fewer calories to lose fat without losing muscle, but if you're already lean, you need to be more careful with how much you cut your calories.
8. If you're someone who lifts weights regularly, cutting your calories by 10% helps you lose about twice as much fat as eating just enough to maintain your weight — and you’ll still gain the same amount of muscle and strength.
9. You can't say protein alone changes your body shape if other things like workout coaching and overall diet are different between people in the study.
10. Fit people might be able to lose fat and gain muscle at the same time, even if they're not eating more or less than they burn—especially over a 10-week period.
Related Content
Claims (10)
Fit people might be able to lose fat and gain muscle at the same time, even if they're not eating more or less than they burn—especially over a 10-week period.
If you're someone who lifts weights regularly, cutting your calories by 10% helps you lose about twice as much fat as eating just enough to maintain your weight — and you’ll still gain the same amount of muscle and strength.
The more calories you burn compared to what you eat, the more fat you'll lose — it's like a math equation for your body.
If you're an experienced lifter, keeping your calories steady won't change your body much. To lose fat or gain muscle, you need to eat less or more than your body needs, on purpose.
If you're someone who lifts weights regularly, whether you're eating more or fewer calories than your body needs is one of the biggest factors in how fast you gain muscle or lose fat.