The real reason we sweat
Roger Ndayisaba
Around the world, sweat is seen as gross. However, in extremely hot places — like Arizona’s Maricopa County, which recorded 608 heat-related deaths in 2024 — sweating is the body’s main line of defense. Although this summer was milder than in recent years, the Valley of the Sun still faced extreme heat, including nine days in June and 12 in July where temperatures reached 110 degrees or higher. In such conditions, sweating becomes the body’s main line of defense, yet the mechanics behind how it