The following true or false statements test what you know about sleep. Be sure to read the correct answers and explanations.
T - F | 1. Sleep is a time when your body and brain shut down for rest and relaxation. |
T - F | 2. If you regularly doze off unintentionally during the day, you may need more than just a good night's sleep. |
T - F | 3. If you snore loudly and persistently at night and are sleepy during the day, you may have a sleep disorder. |
T - F | 4. Opening the car window or turning the radio up will keep the drowsy driver awake. |
T - F | 5. Narcolepsy is a sleep disorder marked by "sleep attacks". |
T - F | 6. The primary cause of insomnia is worry. |
T - F | 7. One cause of not getting enough sleep is restless legs syndrome. |
T - F | 8. The body has a natural ability to adjust to different sleep schedules such as working different shifts or traveling through multiple time zones quickly. |
T - F | 9. People need less sleep as they grow older. |
T - F | 10. More people doze off at the wheel of a car in the early morning or midafternoon than in the evening. |
Your score: How many correct answers did you get (answers)?
Prepared by the National Heart, Lung, and Blood Institute

