Why do we sleep? | தமிழ்

In this video the mystery " Why do we sleep? " is resolved in Tamil. The reason for our sleep is not yet defined clearly by any researchers or scientists. Actually the reason why we sleep is mainly because of two things one is the hormone melatonin causes sleep and maintains Sleep/wake cycle or circadian Rhythm and the other reason for sleep is adenosine chemical compound found in the neurons of our brain as a byproduct of adenosine triphosphate. The other topics covered for the reason of sleep are,

1. Why it is hard to wake up from sleep early?
2. Why do we forget our dream after sleep?
3. stages of sleep!


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Science For Life - https://goo.gl/chD5uB
Tech Guide - https://goo.gl/6EOVEz
Explained - https://goo.gl/zYTvZ7

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