Sleep is a common activity of all living beings, namely, animals, birds, reptiles and men inspite of differences in :-
- anatomy,
- physiology,
- environment and
- modes of adaptation to their environment.
- Deer-3 hours,
- Elephant-4 hours,
- Whale-5 hours,
- Monkey-9 hours,
- Cat-12 hours,
- Bat-20 hours,
- Mice-14 hours and Men-8 hours.
- Some sleep in their dwelling places such as burrows, dens, caves and nests,
- Some sleep in open places,
- Bats sleep in hanging position,
- Mice and many other animals and birds sleep during day-time,
- Horses sleep in standing posture,
- Some birds sleep while standing,
- Some birds sleep while swimming or floating in water,
- Owls sleep during day-time,
- Many reptiles sleep with their eyes kept open and
- Men sleep lying down in closed rooms.
For the past 20 years Sleep Studies on sleep of different animals, birds, reptiles and Men are undertaken. However, the reasons for the different sleeping times, postures and the need for sleep have not yet been fully known. Further researches and studies on sleep will reveal the secrets of sleep in various living beings, which will be helpful in solving many Sleep disorders found in human beings.
Tag Health
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