![]() “If you’re running in the heat, you’re more likely to have cramps develop in the legs,” Williams says. The muscles most likely to cramp are those engaged during the person’s activity. They are an early sign your body isn’t coping well with the heat, says Kristopher Paultre, a sports medicine physician at the University of Miami.Ĭramps are triggered when heavy sweating causes the loss of important electrolytes a sudden drop in sodium, potassium, and calcium can trigger involuntary contractions. Heat cramps are painful, involuntary spasms following strenuous activity outside. Heat cramps happen during outdoor exertion Most cases resolve within hours, but if redness or pain lingers, or if fever appears, the area may have become infected, requiring antibiotics. Placing cool compresses on the skin may speed healing. Heat rash differs from sunburn because sun exposure is not required and the blisters typically aren’t dangerous.Īs soon as the rashes are spotted, people should move to a cool environment and remove troublesome garments. The rash generally appears on the chest, neck, and/or armpits when a shirt is snug, or around the breasts or groin if a bra, shorts, or underwear are tight. Heat rash, also known as prickly heat, are small, pimple-like blisters that erupt when sweat trapped under tight clothing can’t evaporate so pores become clogged. Heat rash develops within hours on humid days ![]() It doesn’t take long for heat to injure the body, which is why recognizing the signs of heat illness-and knowing the actions one must take-can save lives. (Humidity is accounted for in the heat index or feels like temperatures on weather apps.) Centers for Disease Control and Prevention. Jon Williams, a heat health expert at the National Institute for Occupational Safety and Health at the U.S. ![]() Although this technique works well for the dry African savannas where humans evolved, it’s much less effective in swampy Washington, D.C., subtropical South Florida, and many other parts of the U.S., says W. The thermometer is key, of course, but humidity matters too, because humans primarily cool our bodies through the evaporation of sweat. Whether extreme temperatures can hurt-and sometimes kill-involves numerous factors. “Heat is extremely dangerous, and climate change will make more areas prone,” he says. Thanks to climate change, these blazing firsts-including Earth’s average hottest day, on July 3rd-will likely soon be surpassed, so it’s important to understand the ways heat damages the human body and how to prevent them, says Kurt Shickman, director of extreme heat initiatives at the Adrienne Arsht-Rockefeller Foundation Resilience Center in Washington, D.C. ![]() The United States clocked the largest number of heat warnings ever, parts of China simultaneously roasted, and Europe’s temperatures spiked so high residents unofficially dubbed the heat wave Cerberus, for the monster in Dante’s Inferno. Recent weeks have seen record-breaking heat on three separate continents. ![]()
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