Other questions in this quiz

2. Siffre studied circadian rhythms in a cave for 6 months, but how long did his biological rhythm run for?

  • 30 / 35 hours
  • 25 / 30 hours
  • 20 / 25 hours
  • 15 / 20 hours

3. Which of these is NOT a sleep disorder?

  • Hypertension
  • Sleep apnoea
  • Sleep walking
  • Insomnia

4. How many stages of Non Rapid Eye Movement (NREM) sleep are there?

  • Six
  • Four
  • Three
  • Five

5. Which stage of NREM sleep is described: Growth hormone produced, sleep walking and bed wetting may occur, deepest stage of sleep?

  • Stage 2
  • Stage 3
  • Stage 4
  • Stage 5

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