Why do humans need to sleep
Scientists know that one function of sleep is to replenish brain glycogen levels, which fall during the waking hours. ChaCha! [ Source: http://www.chacha.com/question/why-do-humans-need-to-sleep ]
More Answers to "Why do humans need to sleep"
- Every living creature in this world needs to rest. Cat's, dogs, little babies, elephants and so much more. Just like eating. Sleep is necessary for survival. It gives our body a rest and allows it to prepare for the next day. It's like givi...
- during sleep ur body rests and other process take place as well. human atleast need 8 hours of sleep
- since you read in my earlier post that honeybees dont sleep……. here i was wondering why humans do……. and i realised, that probably thats the time our body takes whatever rest it needs to recuperate and rejuvenate to carry on with the next d...
Related Questions Answered on Y!Answers
- Why do humans need to sleep in any 24 hour period?
- Q: Why is it tha humans sleep? Is it only because culturally our days are divided into 24 hour periods that we have been conditioned to sleep during that period.What are the physiolgical reasons for sleeping?
- A: Although scientists are still trying to learn exactly why people need sleep, animal studies show that sleep is necessary for survival.Sleep appears necessary for our nervous systems to work properly. Too little sleep leaves us drowsy and unable to concentrate the next day. It also leads to impaired memory and physical performance and reduced ability to carry out math calculations. If sleep deprivation continues, hallucinations and mood swings may develop. Some experts believe sleep gives neurons used while we are awake a chance to shut down and repair themselves. Without sleep, neurons may become so depleted in energy or so polluted with byproducts of normal cellular activities that they begin to malfunction. Sleep also may give the brain a chance to exercise important neuronal connections that might otherwise deteriorate from lack of activity.
- What is the scientific reason why humans need sleep?
- Q: Is it simple cell biology, or is there some sort of phenomena that exists within all of us?
- A: Sleep helps you to restore and rejuvenate many body functions:Why do we need sleep?Sleep helps you to restore and rejuvenate many body functions:Memory and learning – Sleep seems to organize memories, as well as help you to recover memories. After you learn something new, sleep may solidify the learning in your brain. Mood enhancement and social behaviors - The parts of the brain that control emotions, decision-making, and social interactions slow down dramatically during sleep, allowing optimal performance when awake. REM sleep seems especially important for a good mood during the day. Tired people are often cranky and easily frustrated. Nervous system – Some sleep experts suggest that neurons used during the day repair themselves during sleep. When we experience sleep deprivation, neurons are unable to perform effectively, and the nervous system is impaired. Immune system – Without adequate sleep, the immune system becomes weak, and the body becomes more vulnerable to infection and disease. Growth and development – Growth hormones are released during sleep, and sleep is vital to proper physical and mental development.
- Why humans need sleep despite we can live only for 80-90 years?
- Q: Cars are fine by only taking gas.Human is not fine by only taking foods.
- A: Great question. There are many theories but I believe it is the 1/3 of our lives that we spend in sleep that we are recharging our spirit. We do have an energy inside of us that helps us survive. An energy that is not refueled or charged with food or water. But only through prayer, meditation or sleep can you charge this spirit. Love and good deeds makes this spirit stronger. God fills the spirit with love, protection, wisdom and grace as it gets stronger. He will be the one to judge that spirit as well when it leaves this body form and is before the gates of Heaven. Well that is my take. Here is a video that is not really along those lines but has scientific theories of what sleep is.http://www.semel.ucla.edu/sleepresearch/sciam2003/sciamsleep.pdf
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