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An otherwise normal healthy young man st...

An otherwise normal healthy young man started perspiring while it was intensely cold outside. Explain.

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**Step-by-Step Solution:** 1. **Understanding the Situation**: The question describes a young man who is healthy but begins to sweat in cold weather. This is unusual because sweating typically occurs in response to heat. 2. **Role of the Hypothalamus**: The hypothalamus is a part of the brain that regulates body temperature. When the body senses a drop in temperature, the hypothalamus reacts to maintain homeostasis (the body's stable internal environment). 3. **Hormonal Response**: In response to the cold, the hypothalamus triggers the release of adrenaline (also known as epinephrine). This hormone is part of the body's fight-or-flight response and plays a role in increasing the metabolic rate. ...
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