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After a few pleasant hours sitting in the sun watching the Prefontaine Classic in Eugene, Oregon last spring, I headed down into the bowels of Hayward Field for a grueling test for running in the heat ...

Heat stress happens when your body starts having problems regulating internal temperature due to high external temperatures. It may lead to heat-related illnesses like heat exhaustion and heatstroke.

Heat stress places considerable demands on the human body, compelling profound adjustments in thermoregulatory, cardiovascular, and neuromuscular functions. The onset of hyperthermia during exercise ...

Heat training is the order of the day on the 2025 Tour de France. Partly because the sun is shining in France and an athlete's body should be well adapted to the heat, but also because heat training ...