How much sleep is necessary ?
After writing about sleep disorders I got this bug in my mind that how much actually a person needs sleep ? After searching a lot what I found is that the exact amount can't be found or is not firmly established. What I can say that our bodies would require a tranquil "rest and relaxation" period in order to refresh or you can say repair ourselves. Although I know that some sleep is necessary but what I don't know just how much is absolutely required. For example, while most people sleep between seven and eight hours each night, there is a wide variability among individuals, with some people needing as little as three hours while others still need 9 or more than this to refresh. What I learnt so far is that sleep requirements change with the passage of life time, as we age we need less and less amount of sleep. That's all I know firmly :). I tried to find some material to find out how much a person can remain awaken I found that people who participate in sle...