SLEEP WITHOUT DRUGS: WHY SLEEP?
Sleep is a fascinating biological function which we all experience. In fact, one-third of our lives is spent in sleep. Most of us take it for granted that we fall asleep at night and wake up the next morning. We do this night after night, and we do this from the day we enter this earth to the day we depart. However, have you stopped and asked what sleep actually is and why we need to sleep at all? Sleep is something we have no control over. We cannot close our eyes and give the magic word sleep, as sleep may not follow. In studies of how people fall asleep, it is observed that we are not folly awake one second and asleep the next. We all go through a very brief hypnotic state, which is called the Transitional Hypnotic State or THS.
We have all experienced the fact that after a good night’s sleep we are refreshed and appear to function better than after a restless night. The exact nature of this is not fully understood. Sleep is not unique to man. Nearly all species of the Animal Kingdom sleep. But the amount of sleep in animals varies a great deal between different species. Gorillas sleep 14 hours a day, elephants only 2. We will explain the possible reasons why we sleep under the following headings:
* Evolution theory
* Biological theory
* Dream theory
* Neurone theory
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