Naturally repeating state of comparatively suspended sensory and motor activity is called Sleep. It is characterized by entire or partial unconsciousness and the inactivity of nearly all voluntary muscles. It is differentiated from quiet wakefulness by a diminished ability to react to stimuli, and it is easily reversible than hibernation or coma. Sleep is noticed in all mammals, all birds, and many reptiles, amphibians, and fish. Regular sleep is necessity for survival of living organisms. In mammals and birds, sleep is divided into two wide types namely Rapid Eye Movement sleep and Non-Rapid Eye Movement sleep. Each of this type has a distinct set of related physiological, neurological, and psychological features. We can get better sleep by
i. making a better sleep environment
ii. developing a relaxing bedtime routine
iii. making stress and anxiety under our control
iv. finding out how to get back to sleep
v. Optimize our sleep schedule
vi. Improving our diet
vii. Doing exercise regularly.
Better sleeping environment is concerned with room, bed and surroundings. Several kinds of beds for sale are available. A general guideline for adults to sleep is 7-8 hours a night. Aged people need quite a similar amount, but it might be lighter and will include a brief nap during the day.