Sleep, Dreams and Rest

Lifestyle · 10 questions

What really happens when you close your eyes each night.

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1. Roughly how many hours of sleep do most healthy adults need per night?

   1. 4 to 5 hours
   2. 5 to 6 hours
   3. 10 to 12 hours
   4. 7 to 9 hours
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   D) 7 to 9 hours

2. During which sleep stage do most vivid dreams occur?

   1. REM sleep
   2. Deep slow-wave sleep
   3. Stage 1 light sleep
   4. Sleep onset
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   A) REM sleep

3. Which hormone, released in darkness, helps regulate the sleep-wake cycle?

   1. Adrenaline
   2. Melatonin
   3. Insulin
   4. Cortisol
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   B) Melatonin

4. What is the name for the body's internal 24-hour clock?

   1. Metabolic cycle
   2. Lunar rhythm
   3. Circadian rhythm
   4. Diurnal wave
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   C) Circadian rhythm

5. Which type of light from screens is most associated with disrupting sleep?

   1. Red light
   2. Infrared light
   3. Blue light
   4. Ultraviolet light
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   C) Blue light

6. What is the term for waking up momentarily unable to move as you fall asleep or wake?

   1. Somnambulism
   2. Narcolepsy
   3. Insomnia
   4. Sleep paralysis
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   D) Sleep paralysis

7. Which of these is a common tip for better sleep hygiene?

   1. Keeping a consistent bedtime
   2. Drinking coffee in the evening
   3. Napping for 3 hours
   4. Scrolling in bed
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   A) Keeping a consistent bedtime

8. Which animal sleeps with half its brain at a time, allowing it to keep swimming?

   1. Shark
   2. Dolphin
   3. Turtle
   4. Seal
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   B) Dolphin

9. Your brain is fully inactive during sleep.

   1. True
   2. False
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   B) False

10. Naps of 20 minutes or less can boost alertness for many people.

    1. True
    2. False
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    A) True