It is recommended for adults to have 7-9 hours of sleep every day. If you think that’s a lot of time and that you could have done something productive at that time, then it depends on what you mean by productive because resting the body for 7-9 hours is fruitful itself.
The body goes through a lot while you sleep so you can be more productive when you wake up. It goes through stages of sleep. Along with knowing that you need 7-9 hours of sleep a day, it is also important to know how much you need per stage of it.
There are five stages of sleep that rotate between non-rapid eye movement (NREM) and rapid eye movement (REM) and include drowsiness, light sleep, moderate to deep sleep, deepest sleep, and dreaming.
Experts have recommended that adults gets about 7 to 9 hours of sleep per night. New research aims to identify not just how much total sleep you need — but also how much of each stage of sleep you need.
Sleep stages 1, 2, and REM