What Happens to Your Body When You Train in Hot-Weather Conditions?


It’s 90 degrees and humid outside. The last thing you want to do is workout in the heat—but did you know that training in the heat could actually work to your advantage?

I had the opportunity to visit the Mission Heat Lab at the University of Connecticut campus in Storrs, CT. In the lab is a heat chamber that can be set to up to 110 degrees, and the humidity set between 10 and 90 percent. Inside the chamber, you can hop on one of the bikes or treadmills which will track your heart rate, core temperature, body mass, wattage, pace/speed and sweat rate.

All of these factors are then used for sweat electrolyte and sodium balance tests, which can tell a person the amount of electrolytes he or she loses at a particular temperature, going a specific wattage, for a set amount of time.

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