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Humans need sleep because it is an essential process to maintain health. Sleep is necessary for cognitive functions, such as memory, emotions and learning, as well as physical func...



Industrialization and artificial light have substantially altered human sleep ..... Animals that do not need recovery sleep after staying awake longer than usual.

Why Do We Sleep, Anyway? | Healthy Sleep


Dec 18, 2007 ... Still, the question remains: Why do we need sleep at all? ... for example, what happens when humans or other animals are deprived of sleep.

Why Do We Need Sleep? - Excessive Sleepiness


Why do our bodies need sleep? ... Researchers have also shown that after people sleep, they tend to retain ... How Much Sleep Do We Really Need? Healthy ...

Scientists Finally Understand Why We Need Sleep, And It's Because ...


Oct 19, 2013 ... Humans need sleep; everybody knows that without it, we get cranky, a bit ... for our body's mental street-cleaners to come out and do their work.

Why do we sleep? - BBC News - BBC.com


May 15, 2015 ... New research is giving scientists an insight into why we sleep and what happens ... Research suggests that parts of the human brain may well be asleep when it is sleep-deprived. .... 'Arrogance' of ignoring need for sleep.

Why Do Humans and Many Other Animals Sleep? - Neuroscience ...


For infants, the requirement is much higher (about 16 hours a day), and teenagers need on average about 9 hours of sleep. As people age, they tend to sleep ...

Why We Need to Sleep - Sleepdex


Scientists have yet to determine exactly why people sleep. However, they do know that humans must sleep and, in fact, people can survive longer without food  ...

Why do we need so much sleep? - Technology & science - Science ...


What we do know is that sleep is an anabolic, or building, process. ... Human beings can function without a full tune-up, but they will be in a state of relative sleep ...

Why Do I Need to Sleep? - KidsHealth


The amount of sleep a person needs depends a lot on his or her age. Babies sleep a lot — about 14 to 15 hours a day! But many older people only need about 7 ...

Popular Q&A
Q: Why do humans need sleep?
A: Humans need sleep to restore cognitive abilities and to rest our Read More »
Source: www.chacha.com
Q: Why Do Humans Need to Sleep?
A: HOLLY FIRFER, CNN MEDICAL CORRESPONDENT: Although scientists are still trying to figure out exactly why we need to sleep, studies have shown it's as important t... Read More »
Source: cnn.com
Q: Why do humans need to sleep?
A: Scientists have proposed the following theories on why humans require sleep: * Sleep may be a way of recharging the brain. The brain has a chance to shut down a... Read More »
Source: uk.answers.yahoo.com
Q: Why do humans need to sleep
A: It is said that it is restorative, in that the body needs to rest in order to get rid of metabolic wastes & allow 4 the brain to rest & plan the future. Read More »
Source: www.kgbanswers.co.uk
Q: Why do humans need to sleep?
A: To date, the full and scientific purpose of sleep is still vague at best. Most theories depend on the idea that the body needs a period of inactivity to heal, r... Read More »
Source: www.enotes.com