Actually the correct answer to "how many hours should I sleep?" is: it depends.
I spend several hours a week breaking down my body by lifting extremely heavy weights at the gym each week. I don't feel good with 7 hours of sleep. My body needs to repair itself.
I spend several hours a week breaking down my body by lifting extremely heavy weights at the gym each week. I don't feel good with 7 hours of sleep. My body needs to repair itself.