Search results
Results From The WOW.Com Content Network
So-called initial insomnia involves difficulty falling asleep; maintenance insomnia occurs when you wake up in the middle of the night but are able to go back to sleep; and late insomnia is waking ...
During the recommended seven to nine hours of sleep, we typically go through three to five sleep cycles per night, with the duration of REM sleep getting longer each subsequent time, Varga explains.
Can you really get by with just 6 hours of sleep a night? Here's what to know and how to get more sleep.
The most logical way to determine when you should go to sleep is to think about when you need to wake up for work, wake up the kids or whatever else you do to start your morning, and count back ...
W aking up throughout the night is normal. Most adults do it between two and six times per night—and if you’re a good sleeper, these wakings will be so brief that you likely won’t remember ...
Sleep efficiency (SE) is the ratio between the time a person spends asleep, and the total time dedicated to sleep (i.e. both sleeping and attempting to fall asleep or fall back asleep). It is given as a percentage. [1] SE of 80% or more is considered normal/healthy with most young healthy adults displaying SE above 90%.
Sleep research conducted in the 1990s showed that such waking up during the night may be a natural sleep pattern, rather than a form of insomnia. [2] If interrupted sleep (called "biphasic sleeping" or " bimodal sleep ") is perceived as normal and not referred to as "insomnia", less distress is caused and a return to sleep usually occurs after ...
A sleep onset latency of 0 to 5 minutes means severe sleep deprivation, 5 to 10 minutes is "troublesome", 10 to 15 minutes indicates a mild but "manageable" degree of sleep debt, and 15 to 20 minutes is indicative of "little or no" sleep debt. [1]: 341–342