NPR begins a celebration of sweat — what it's made of, where it comes from and what it smells like. Spoiler alert: most of the time it doesn't... The importance of sweat: We need it to keep cool LEILA ...

Sweating is a natural and essential process that helps regulate body temperature. But what happens when sweat lingers on your clothes for too long? Many people overlook the potential health risks ...

Even if it's iced, your coffee contains caffeine that isn't helping to cool you down. Adam Hester via Getty Images Whether you’re outside in scorching temperatures or you’ve just finished an intense ...