How much deep sleep do I need?
How much sleep should adults have in 24 hours ideally?
How many hours do successful people sleep per day? How many hours do you sleep per night? How many hours do you sleep (day & night) per day? What is the ideal amount of sleep time that a teenager needs to be healthy? For how many hours do successful people sleep? How many hours of focused, detailed work can a person reasonably do in a 24-hour period, before needing sleep? Is it healthy to sleep for 12 hours a day? Why or why not? Is 6 hours of sleep enough for a 17 year old? Would having two 4-hour cycles of sleep (per day) as effective for the body as sleeping 8 hours in a row? By practicing to sleep for 5 or 6 hours, is it possible to maintain a healthy life style? How do I sleep 5 hours a day? How many hours of sleep does a kid need? How important is sleep? Is it unhealthy to sleep for over 12 hours? How do you sleep 7 hours a day? How much should I sleep as a teenager? How do you strategically sleep only 5 hours a day and be well rested? How can we reduce our sleeping hours? How many hour students sleep? What does it feel like to sleep for fewer than 5 hours a day for more than a year? How do I sleep 8 hours in 4 hours? What is the maximum numbers of hours a normal person can stay awake and concentrate on anything without sleeping? Would this make you insomniac forever? Is it bad to work out when you only got 4 hours of sleep the night before? How do I sleep 7 hours a day? What is the best time for sleeping? What are the potential long term side effects of sleeping 5–7 hours from Mon- Fri ? Why do we need eight hours of sleep? How can you manage sleep (decrease sleeping time) in daily life? What's the ideal ratio of light, deep, and REM sleep? How dio I sleep continuously for 8 hours, if I used to 6.5 - 7 hours?