What Aspect of Circadian Rhythms Might Explain Why We Tend

question 60

Multiple Choice

What aspect of circadian rhythms might explain why we tend to feel so tired at night?

• A) Body temperature bottoms out on Monday mornings.
• B) The three biorhythm patterns converge at low points on Mondays.
• C) Heart rates typically increase at night.
• D) There is an organ in the brain sensitive to light changes, which then affects our sleepiness.
• E) There is more melatonin secreted by the hypothalamus when our circadian rhythm is disrupted.

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