It takes two or three nights of restless sleep because of back pain, ruptured discs, sciatica, and other sleep disorders for you to realize that you need to do something. (pillowtip.com)
Sleeplessness and other sleep disorder such as restless leg syndrome are common complaints among the middle - aged population. (sciencedaily.com)
(CJPG / ZEFA / CORBIS) Until you've experienced it yourself, it may seem contradictory that a person can be utterly exhausted and yet unable to sleep, but that's precisely what distinguishes insomnia from other sleep disorders. (health.com)