Why do we need sleep ?
Our team of writers, editors, and medical experts rigorously evaluates each article to ensure the information is accurate and exclusively cites reputable sources. Learn More We regularly assess how the content in this article aligns with current scientific literature and expert recommendations in order to provide the most up-to-date research. Listen to this article 0:00 / 6:06 1X Sleep is an essential function 1 that allows your body and mind to recharge, leaving you refreshed and alert when you wake up. Healthy sleep also helps the body remain healthy and stave off diseases. Without enough sleep, the brain cannot function properly. This can impair your abilities 2 to concentrate, think clearly, and process memories. Most adults require between seven and nine hours 3 of nightly sleep. Children and teenagers need substantially more sleep, particularly if they are younger than five years of age. Work schedules, day-to-day stressors, a disr...