Q
Why do we have different circadian rhythms?
A
Expert Answer
Chronotype (morningness/eveningness) is influenced by: genetics (PER3, CLOCK genes), age (teenagers shift later; elderly earlier), light exposure, social schedules, and individual variation. Night owls may have slightly different circadian periods. Society's early schedules disadvantage natural evening types.
Key Insight
Chronotype (morningness/eveningness) is influenced by: genetics (PER3, CLOCK genes), age (teenagers shift later; elderly earlier), light exposure, social schedules, and individual variation.
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