It’s Not the Heat, It’s the Humidity

So it’s -15 Celsius this morning in Montréal and I get this interesting piece of information courtesy of The Mayo Clinic:

Why the heat index matters
Created by the National Weather Service, the heat index (HI) tells you how hot it really feels when humidity is added to air temperature. When the HI is between 105° F and 130° F, heatstroke is possible with continued exposure or physical activity, if the HI is 130° F or higher, the heatstroke is highly likely with continued exposure.

Reduce your risk of heat-related illness by exercising outdoors during cooler times of the day when possible. If you must exercise in hot and humid weather, start with short, 10-15 minute bouts of low to moderate-intensity physical activity and gradually increase your time and intensity over to 10 to 14 days. This gives your body time to adapt to exercising in a hot and humid environment. Get plenty of rest, food and fluids before you exercise, stay hydrated during and after your workout, and take frequent breaks.

-Mayo Clinic

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