What is the primary way your body reacts to cold to conserve heat?
- A) Increased heart rate (Tachycardia)
- B) Narrowing of blood vessels (Vasoconstriction)
- C) Accelerated heat generation (Thermogenesis)
- D) Fluid buildup in the joints (Edema)
When you are exposed to cold, your body’s immediate priority is to protect its core temperature. To conserve the heat you already have, the blood vessels near the surface of your skin constrict (vasoconstriction). This reduces blood flow to the skin and extremities, keeping the warm blood concentrated around your vital organs.


