SLEEP
Sleep is a temporary lapse of consciousness. During sleep, our central nervous system, breathing, heart-beat and muscle-tone are slowing down.
Human sleep duration varies enormously. Babies sleep for 18-20 hours a day, you children sleep for 12-14 hours, adults sleep for 7-9 hours and older people sleep for 5-7 hours.
Some people nowadays suffer from insomnia. These people cannot sleep easily. Insomnia is not an illness. It is a symptom of a sleeping disorder which can be caused by anxiety, depression and excitement. It cannot be cured without getting rid of the problems which cause it. But temporary, insomnia can be overcome by drinking chamomile tea.