Insomnia or sleeplessness has assumed alarming proportions in present times, especially
among the upper classes in urban areas. This is evident from the wide range of medication for
this condition prescribed by physicians and sold by chemists. Instances of persons taking an
overdose of sleeping pills with fatal results are quite frequent. Insomnia deprives a person of
mental rest and thereby interferes with his activities in the daytime. It constitutes a severe health
hazard when it becomes a habit.

Sleep is a periodic state of rest for the body which is absolutely essential for its efficient
functioning. Sleep gives relief from tension, rests the brain and body and a person wakes up in
the morning fresh and relaxed after sleep. The amount of sleep, however, varies within very
wide limits from individual to individual. Normally, seven to eight hours of sleep every night is
adequate for most people. Some, however, do well with four to five hours because their sleep is
deeper and more refreshing.

Insomnia is common among the elderly for a variety of reasons. The sleep of the elderly is often
punctuated by brief periods of wakefulness during the night. IN such cases it is the quality rather
than the quantity which is most affected. With age, there is gradual reduction of periods of deep
sleep. The older person, therefore, gets roused easier. Sleep requirements also diminish with
ageing. From nine hours of sleep per night at the age of 12 the average sleep needs decrease to
eight hours at the age of 20 , seven hours at 40, six and half hours at 60 and six hours at 80.