Web Results

healthysleep.med.harvard.edu/healthy/matters/benefits-of-sleep/why-do-we-sleep

Dec 18, 2007 ... scientists have developed several theories that together may help explain why we spend a third of our lives sleeping. ... Still, the question remains: Why do we need sleep at all? Is there a single ... They have examined, for example, what happens when humans or other animals are deprived of sleep.

sleepfoundation.org/excessivesleepiness/content/why-do-we-need-sleep

While adults need 7-9 hours of sleep per night, one-year-olds need roughly 11 to 14 hours, school age children between 9 and 11, and teenagers between 8 and 10.During these critical periods of growth and learning, younger people need a heavy dose of slumber for optimal development and alertness. Unfortunately, a ...

www.tuck.com/why-sleep

Oct 23, 2017 ... However, they do know that humans must sleep and, in fact, people can survive longer without food than without sleep. Sleep serves many functions – or more precisely, many things happen while we are asleep. Scientists have floated many hypotheses on why humans require sleep: The brain is able to ...

www.bbc.com/news/science-environment-32606341

May 15, 2015 ... "Since more people are choosing electronic devices for reading, communication and entertainment, particularly children and adolescents who already experience significant sleep loss, epidemiological research evaluating the long-term consequences of these devices on health and safety is urgently ...

www.livescience.com/32469-why-do-we-sleep.html

Jul 18, 2017 ... Sleep is difficult to study, but researchers have now proposed a few ideas to explain why we need to sleep. ... The human need for sleep is a mystery. ... of Neuroscience found that a mere 24 hours of sleep deprivation caused healthy people to have hallucinations and other schizophrenia-like symptoms.

www.howsleepworks.com/why.html

When deprived of sleep, we function less effectively, feel tired and irritable, make more mistakes, are less creative and, if taken to extremes, ultimately die. In the same way as a feeling of hunger reminds us of the basic human need to eat, a feeling of sleepiness reminds us of our essential need to sleep. Exactly how or why ...

www.themarysue.com/understanding-sleep

Oct 19, 2013 ... Sleep. Humans need sleep; everybody knows that without it, we get cranky, a bit loopy, and then we die. Unfortunately, science has been a little iffy about it; though we understood the negative effects ... Sleep is pretty much necessary for our body's mental street-cleaners to come out and do their work.

www.sleepio.com/articles/sleep-science/why-do-we-need-to-sleep

Sleep is not an optional extra in life; it is a fundamental requirement. In fact, you could survive for three times as long without food as you could without sleep. Much of what we know about the importance of sleep comes from experiences of people who have taken part in sleep-deprivation experiments. That is, where ...

www.iflscience.com/health-and-medicine/why-do-we-sleep

Sleep is one of our most basic human needs. We spend about a ... “This may ultimately be the primary reason why we need to sleep,” researchers note. ... You can either entertain the guests or clean up the house, but you can't really do both at the same time," lead researcher Dr Maiken Nedergaard told the BBC. Another  ...