Sleeping from 10pm to 4 am is good for some people and means you would be getting 6 hours of sleep which some people can function on but others may need 7 hours or more to function.
If you need to get up at 4 am and need 7 hours of sleep you should go to sleep at 9 pm but if 6 hours of sleep is okay for you and you function okay then it's okay for you.
The golden hour of sleep is between the hours of 10:00 PM to 11:00 PM.
Going to sleep between the hours of 10:00 PM to 11:00 PM is considered the golden hours of sleep and the sweet spot for most people as it keeps their heart healthy long term.
If your school or work schedule requires you to be up between 5:00 AM and 7:00 a.m., these are the suggested bedtimes to go to sleep to get the most and healthiest amount of sleep.
School-age children should go to bed between 8:00 AM and 9:00 p.m.
Teens should try to go to bed between 9:00 AM and 10:00 p.m.
Adults should try to go to sleep between 10:00 AM and 11:00 p.m.
People who go to bed and sleep during a golden hour between 10pm and 11pm have less risk of cardiovascular disease and stroke than those who go to bed at other times.
Most adults need 7 or more hours of sleep each night.
It's also important to get good-quality sleep on a regular schedule so you feel rested when you wake up.
If you often have trouble sleeping or if you often still feel tired after sleeping talk with your doctor.
School-age children (ages 6-13) need 9-11 hours a day.
Teenagers (ages 14-17) need about 8-10 hours each day.
Most adults need 7 to 9 hours, although some people may need as few as 6 hours or as many as 10 hours of sleep each day.
Older adults (ages 65 and older) need 7-8 hours of sleep each day.
For babies 5 months and older, aim to follow the 80/20 rule.
That means, 80% of the time we try to have naps at home in an “ideal” sleep environment, and 20% of the time we can be flexible with naps outside of the crib or on-the-go.