How does sleep affect muscle growth?
Sleep is vital for muscle growth as it is during sleep that the body repairs and builds muscle tissue. Lack of sleep can hinder recovery and negatively impact hormone levels, such as testosterone and growth hormone, which are crucial for muscle development.
✦
This is one answer. The complete system — the psychology, the biology, and the method — is in the book.
Read The Willpower Lie →Found an error? Let me know →