URMC / Encyclopedia / Content Search Encyclopedia What Do You Really Know About Sleep? A good night's sleep—everyone needs it, but not everyone gets it. We stay up late and get up early, and then wonder why we always feel tired. Why is sleep important? See how much you know about snoozing by taking this quiz. 1. The rapid eye movement (REM) sleep stage is when dreaming occurs. How often does REM happen during the night? You didn't answer this question. You answered The correct answer is REM sleep occurs about every 1-1/2 to 2 hours while you sleep. During such sleep, the eyes move rapidly under the closed lids. A. 4 or 5 timesB. 3 timesC. 2 timesD. 1 time 2. To function well, adults should average how much sleep a night? You didn't answer this question. You answered The correct answer is Also, newborns and babies need up to 16 to 17 hours of sleep each day. A. 5 hoursB. 6 hoursC. 7 to 9 hoursD. 9 to 10 hours 3. How many Americans suffer from long-term (chronic) sleep disorders? You didn't answer this question. You answered The correct answer is Most people don't know what causes their disturbed sleep cycles. Common causes include restless legs syndrome, sleep apnea, narcolepsy, and insomnia. A. 10 millionB. 50 million to 70 millionC. 125 millionD. 200 million 4. A sleepless night can have a similar effect on your ability to drive in morning rush-hour traffic as which of these? You didn't answer this question. You answered The correct answer is Lack of sleep can affect coordination as much as being intoxicated. A. Using a cellphone while drivingB. Using medicines that make you drowsyC. Using alcoholD. None of the above 5. Minor sleep deprivation can affect focus, mood, and what else? You didn't answer this question. You answered The correct answer is Sleep affects every part of our lives. A. MemoryB. Physical performanceC. Ability to do mathD. All of the above 6. Sleepwalking tends to run in families. About how many children are affected? You didn't answer this question. You answered The correct answer is Mental health factors, extreme tiredness, or sleep loss are thought to trigger sleepwalking. Adult sleepwalkers should not drink alcohol or take other central-nervous-system depressants before bedtime. A. 3 in 100 to 1 in 20B. 3 in 20C. 1 in 4D. 7 in 20 Your score was: Medical Reviewers: Novick, Tara, BSN, MSN Sather, Rita, RN Schriber, Andrew D., MD