Why is it so beneficial to a human being to sleep 7 or 8 hours to have good muscle growth? I recently started with bodybuilding and I gained a good amount of muscle in just a few weeks. But I started to think why is it so beneficial to a human being who specially focuses on muscle growth to sleep the recommended daily dose of 7 till 8 hours?
I've already looked here but it hasn't got an answer. So an answer would be appreciated.