What you do in the gym causes your muscles to grow, but change doesn't happen until you're resting or sleeping. One major hormone responsible for this change is human growth hormone (HGH). Our HGH levels are highest when we sleep.

Moreover, many studies suggest an association between a lack of sleep and high cortisol levels. Cortisol is a catabolic hormone that can break down muscle tissue. It's exactly what you don't want if you're trying to build mass. Cortisol is also linked with stress, which often occurs when you don't get enough shut-eye.

You charge your phone at night, right? Do the same for your body so it functions at its best.

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Disclaimer: Hypermuscles.com does not promote the use of anabolic steroids without a doctor's prescription. The information we share is for entertainment and research purposes only.