
Why do we sweat, and why does it help most when it evaporates? Explore how shivering, goosebumps and blood flow near the skin help your body stay warm or cool down, and why fingers and toes get cold first.

Why do we sweat, and why does it help most when it evaporates? Explore how shivering, goosebumps and blood flow near the skin help your body stay warm or cool down, and why fingers and toes get cold first.