Q
Why do we have different reactions to heat and cold?
A
Expert Answer
Temperature tolerance varies due to: genetics (ACTN3 gene affects cold tolerance), brown fat amount (generates heat), body composition (fat insulates), acclimatization (repeated exposure adapts physiology), age, circulatory health, and thyroid function. Cultural practices also influence adaptation.
Key Insight
Temperature tolerance varies due to: genetics (ACTN3 gene affects cold tolerance), brown fat amount (generates heat), body composition (fat insulates), acclimatization (repeated exposure adapts physiology), age, circulatory health, and thyroid function.
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