We all keep piling on rest days when the gains stop, yet this one overnight test explains why 70% of the night’s growth hormone never comes
An overnight sleep study exposes why endless rest days fail to boost recovery: 70% of nightly growth hormone arrives in just the first 90 minutes of sleep, during a specific deep-sleep phase that’s easily disrupted. Miss this window through alcohol, fragmented sleep, or poor timing, and you don’t get a second chance.