How the Skin Regulates Body Temperature

Skin constantly adjusts blood flow to keep your core near 98.6°F (37°C).
When you’re hot, capillaries widen to release excess heat.
When you’re cold, those vessels constrict to trap warmth inside.
Sweat glands act as natural air-conditioners through evaporation.
Goosebumps raise hairs, trapping a thin layer of insulating air.
Shivering under the skin converts muscle energy into heat.
The skin’s temperature sensors send instant signals to the hypothalamus.
Blood in the dermis can change temperature before returning to your core.
Skin color can flush or pale depending on thermal shifts.
Your skin is a living thermostat, balancing comfort and survival.