What time do you go to bed? What time do you usually get up? How much time do you have for sleeping?
I heard that some people (like Elon Musk) sleep for 4 hours in order to have more time to do things during the day. Is it dangerous to health?
I usually go to bed at 12. And get up from sleep at 7 am.Near about 7 hours for sleep. I read somewhere that a matured man have to sleep 8 hours properly to be well and healthy. If Elon Musk spent only 4 hours for sleep its definitely harmful for health. If you work hard you have to sleep perfectly.