Interesting facts about sleep
- Animal have very different sleeping pattern.For instance,bats sleep hanging upside down.
Delfins and whales and also some bird species sleep using only one part of brain,because periodically they must come up to water surface for taking air.
2.Edward Norton,in film fight club,suffer from narcolepsy,sleep disorder.
Narcolepsy symptoms , include periods of excessive daytime sleepiness that usually last from seconds to minutes and may occur at any time.About 70% of those affected also experience episodes of sudden loss of muscle strength, known as cataplexy.These spells can be brought on by strong emotions.
3.Research suggests that sleep patterns vary significantly across cultures.Some societies display a fragmented sleep pattern in which people sleep at all times of the day and night for shorter periods. In many nomadic or hunter-gatherer societies, people will sleep on and off throughout the day or night depending on what is happening.
During Ramadan, many Muslims sleep during the day rather than at night.
