People sleep in order to function in a healthy and normal way. Sleep is a dynamic process during which the brain is very active. Millions of people in the United States are suffering from chronic long-term sleep disorders each year. This does not include yet those other millions of people who are suffering from occasional sleep problems.
There are more than 70 different sleep disorders that are generally classified into one of three categories:
lack of sleep insomnia
disturbed sleep obstructive sleep
excessive sleep narcolepsy
Sleep disorders, when properly diagnosed, can be easily managed. The most common sleep disorder is insomnia which occurs more often in women and in the elderly. People with sleep disorders can take over-the-counter sleep aid drugs, which are most effective for an occasional sleepless night.
Age is a significant factor in determining the amount of sleep that a person needs to function normally. Infants, for instance, sleep most of the day for about 16 hours while teenagers usually need about 9 hours a day. Adults need an average of 7 to 8 hours of sleep a day. However, the elderly usually have shorter periods of sleep...