Elite Athletes Are Changing How They Train for Extreme Heat wired.com

It’s so hot that for the first time ever, the marathon is scheduled to start at midnight to reduce the risk of heat stroke.
Sweating is how the body releases that heat, and its evaporation creates a cooling effect.
He was on the brink of heat exhaustion; others were even closer to heat stroke, which breaks down the body from the inside out.
Even in the 85-ish degrees F of pre-dawn Doha, the risk of heat stroke is high.
Some athletes create their own heat rooms by setting up space heaters next to a treadmill and cranking them up to 90 degrees.