Muscle Growth: Men vs Women, Young vs Old — Who Builds More? The truth: When it comes to relative muscle growth (% gain from baseline), men and women—and younger and older adults—gain muscle at similar rates when training the same way. 💪 A recent Bayesian meta-analysis of 29 studies found no significant sex difference in relative hypertrophy—both men and women increased muscle size by ~10% on average with resistance training (RT). 🧓👩‍🦳 A separate meta-analysis in older adults confirmed the same: men gained more absolute muscle, but relative increases were similar in muscle size and performance. 🔬 So what drives muscle growth? The mechanical load from training. And if protein needs are met (≥ 1.2 and up to 1.6 g/kg/day), timing or pre-exercise intake doesn't matter for hypertrophy gains. Nobody’s hypothalamus is sginalling a strvation state and lean mass is NOT the first thing to go! Women burn fat (and they do it was better than men! ✨ In short: Muscle doesn’t care about your sex ...