Maingaining Is a Waste of Time (New Study)

Key Takeaways

• Maingaining yielded ~1 kg lean gain and 1.4 kg fat loss.
• 10% deficit group lost 2.9 kg fat, double the rate.
• Actual deficits were 16% (≈375 kcal) vs 6% (≈147 kcal).
• Both groups matched strength gains in squat and bench press.
• Deficit approach speeds fat loss; maintenance slows progress.

Pulse Analysis

The study adds a data‑driven layer to the long‑standing debate over "maingaining"—maintaining calories while trying to lose fat and gain muscle. Conducted on experienced lifters, the trial showed that even a near‑maintenance intake can produce modest recomposition, but the magnitude of fat loss lags behind a modest calorie deficit. By quantifying actual energy deficits (6% vs 16%), the research clarifies that many so‑called maintenance protocols unintentionally operate in a slight deficit, which helps explain the observed lean‑mass gains.

From a programming perspective, the results suggest that athletes seeking rapid fat reduction should adopt a calibrated deficit rather than cling to strict maintenance. The deficit group achieved twice the fat loss without sacrificing squat or bench press strength, underscoring that a well‑structured calorie cut can preserve performance when protein is adequate and training is supervised. Coaches can therefore tailor deficits to an individual’s body‑fat percentage and training experience, being more aggressive with higher‑fat athletes and conservative with lean competitors.

Beyond the gym, the findings dispel two common misconceptions circulating on social media. First, the study does not overturn the calories‑in‑calories‑out model; the larger deficit simply produced a larger energy imbalance and more fat loss. Second, protein intake was held high across groups, so the outcomes cannot be attributed to protein differences. For the fitness industry, the research reinforces the importance of precise energy budgeting and individualized nutrition strategies, guiding app developers and personal trainers toward evidence‑based recommendations that balance efficiency with safety.