Sleep is a temporary lapse of consciousness. During
sleep, our central nervous system, breath, heart-beat, and muscle-tone are
slowing down.
Human sleep duration varies enormously. Babies sleep 18-20 hours a day,
young children 12-14 hours, adults 7-9 hours, and older 5-7 hours.
Some people nowadays suffer from insomnia. These people can not 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.
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