Sleep is a non negotiable biological city. It is your life support system, and it is mother nature's best effort yet at immortality. A lack of sleep will age a man by a decade in terms of that critical aspect of wellness. Men who sleep five hours a night have significantly smaller testicles than those who sleep seven hours or more. And it's the same if you're sleeping nine hours a night, like yat, you might just need more sleep than other people.