How to train your body for hot weather if you are active or work outdoors

There are several ways to help prevent a perilous rise in core temperature while being physically active in the heat. (Shutterstock)

Global warming is making outdoor activities challenging — especially exercise. Indeed, we have a very small buffer to tolerate an increase in body heat. A rise in core temperature of only three degrees Celcius can be life-threatening, even for young healthy adults.