Even if your body releases a lot more of the 'muscle-building' hormones after a workout, it doesn’t mean you’ll grow more muscle than someone whose hormone levels stay low—studies show both groups end up with the same muscle size.

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Evidence from Studies

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Load-induced human skeletal muscle hypertrophy: Mechanisms, myths, and misconceptions

Narrative Review

2025 Nov 21

This study says that even if your body releases a lot more muscle-building hormones after a workout, it doesn’t make your muscles grow bigger — what really matters is how hard you lift, not how much hormone you produce.

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Source Study

Load-induced human skeletal muscle hypertrophy: Mechanisms, myths, and misconceptions

Score: 1

DOI: 10.1016/j.jshs.2025.101104

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