Sleep apnea.

It is commonplace for several people to suffer at least an occasional night of almost non-existent sleep. The causes of insomnia differ from person to person. What made a student insomniac varies from what caused a shift worker or a traveler or an employee to acquire such sleeping disorder.

Insomnia, which is the inability to sleep satisfactorily or to have any sleep at all, is one of the most common sleep disorders. It is characterized by restlessness, sleep interruptions, decreased sleeping time than the usual, or sometimes complete wakefulness.

Aside from the annoyance that insomnia can cause to its sufferers, this sleep disorder causes those afflicted to lose enthusiasm and energy, acquire memory and concentration problems, feel lethargic, frustrated, and of course sleepy. Worse cases that may be induced by insomnia is one's being prone to accidents, reduced work productivity and the aggravation of psychological and medical conditions.

So what exactly are the culprits that make insomnia one menacing sleeping problem? Find out below.