SLEEP

Sleep happened because of the existence hypnotoxin that hindered the brain activity, the blood circulation reduction to the brain, or the influence of the environment.

The discovery of BRAKE sleep (Rapid Eye Movement) by Eugene Aserinsky and Nathaniel Kleitman (1953) and circadian rhytm (time sleep-get up that was inappropriate more than 24 hours) by Kleitman (1963) marked the commencement of the era of the sleep research scientifically until being formed by the Centre of the Tidur Research that was first in the USA in 1972.

Although the function of sleep until this was not yet known fully, could be concluded that sleep was the active process, not only rested the brain and the physical activity.

While sleeping, energy or unsure the brain and the body that while getting up was used, it was suspected will be restored.

Whereas toxin that was gathered while getting up was neutralised or thrown away when sleeping.