Sleep is a time when your body and brain shut down for rest and relaxation.
If you regularly doze off unintentionally during the day, you may need more than just a good night's sleep.
If you snore loudly and persistently at night and are sleepy during the day, you may have a sleep disorder.
Opening the car window or turning the radio up will keep the drowsy driver awake.
Narcolepsy is a sleep disorder marked by "sleep attacks."
The primary cause of insomnia is worry.
One cause of not getting enough sleep is restless legs syndrome.
The body has a natural ability to adjust to different sleep schedules such as working different shifts or traveling through multiple time zones quickly.
People need less sleep as they grow older.
More people doze off at the wheel of a car in the early morning or midafternoon than in the evening.