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6. What did Siffre do?

  • Spent a year on a mountain
  • Spent 6 months in a cave
  • Spent 6 months on a mountain
  • Spent a year in a cave

7. How often does a circadian rhythm repeat?

  • Every fortnight
  • Every 24 hours
  • Every 24 days
  • Every 28 days

8. Who did research into the syncing of women's menstrual cycles?

  • McDonald
  • McClinton
  • McClintock
  • Clinton

9. Give an example of an ultradian rhythm

  • The stages of sleep
  • Meal times
  • The sleep/wake cycle
  • The menstrual cycle

10. What is influenced by light and social cues?

  • Exogenous zeitgebers
  • Endogenous pacemakers