Sleep: The $0 Supplement You Aren't Taking

We spend thousands on creatine, protein, and pre-workouts, yet we ignore the most anabolic state known to man: Deep Sleep. This is when your body does 90% of its repair work. If you are sleeping less than 7 hours, you are essentially throwing away half of your gym progress.

The Hormonal Power of Sleep

During deep sleep, your body secretes human growth hormone (HGH) and testosterone. Missing just two hours of sleep can tank your testosterone levels by 15% the next day. Imagine a supplement that increased your test by 15%—you'd pay anything for it. Sleep gives it to you for free.

Sleep Architecture and Hypertrophy

It's not just about length; it's about quality. REM sleep is for your brain, but Deep NREM sleep is for your muscles. This is when blood flow to the muscles increases, and oxygen and nutrients are delivered to repair the damage from your heavy squats or deadlifts.

Athlete resting peacefully

Optimizing Your Sleep for Hypertrophy

To maximize recovery, aim for a cold, dark room and no screens 60 minutes before bed. Blue light suppresses melatonin, the hormone that starts the repair process. Gymology's recovery score considers your sleep quality when calculating your training readiness for the day, helping you decide if today is a PR day or a rest day.