Sleep Disorder
According to the National Center on Sleep Disorders Research, about 70 million Americans suffer from a sleep problem; among them, nearly 60 percent have a chronic disorder.

There are 80 identified sleep disorders including sleep apnea, narcolepsy, restless leg syndrome and conditions causing insomnia:

• Sleep Apnea: People with sleep apnea stop breathing repeatedly during their sleep, usually for a minute or longer and as many as hundreds of times during a single night.
  
• Narcolepsy: People with narcolepsy fall asleep uncontrollably throughout the day for periods lasting less than a minute to more than half an hour. These episodes can occur at any time, even while the person is engaged in an activity. Narcoleptics may also suffer cataplexy (sudden loss of muscle tone), temporary paralysis, and hallucinations.
  
• Restless Leg Syndrome (RLS): People with RLS experience crawling or aching sensations in the calves of their legs that can be relieved by movement. These sensations prevent the person from falling asleep until the early hours of the morning, when the condition is less intense.
  
• Insomnia: People with insomnia have difficulty falling asleep or remaining asleep.
  

Many people suffer from more than one sleep problem. Sleep deprivation may account for as many as 100,000 auto accidents each year in the U.S.