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"Optimal sleep is important because getting the right number of hours of sleep ensures good sleep architecture and healthy patterns for staying and falling asleep," says Dr. Alex Dimitriu, MD, a ...
Healthy adults need to sleep at least seven hours a night on a regular basis for optimal health, according to the American Academy of Sleep Medicine. So for most people, eight hours is enough. So ...
What are the long-term effects? We spoke to a few sleep experts to find out. Is 5 hours of sleep enough? No, five hours of sleep in a 24-hour period is not enough for the vast majority of adults ...
Other researchers have questioned these claims. A 2004 editorial in the journal Sleep stated that, according to the available data, the average number of hours of sleep in a 24-hour period has not changed significantly in recent decades among adults. Furthermore, the editorial suggests that there is a range of normal sleep time required by ...
The optimal nap duration is around 10–20 minutes, ... Children need many hours of sleep per day in order to develop and function properly: ...
Cycles of REM and non-REM stages make up sleep. A normal healthy adult requires 7–9 hours of sleep per night. The number of hours of sleep is variable, however the proportion of sleep spent in a particular stage remains mostly consistent; healthy adults normally spend 20–25% of their sleep in REM sleep. [5]