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do you burn more cal's running in the heat?

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SparkPoints: (91,409)
Fitness Minutes: (144,332)
Posts: 15,061
6/30/08 10:49 P

Hi, S

For practical purposes, M is right. Technically, temperature does have a small effect on calorie burning--heat and humidity increase the amount of energy it takes to maintain your core temperature, but cold actually burns more calories because your body has to boost your core temperature, which takes a little more work. But in both cases, it's a very small amount.

The reason it feels much harder to exercise in the heat and humidity is because of heat stress. The humidity, especially, makes it harder for the sweat to evaporate, which is what actually cools you down. One good thing to do is to avoid wearing cotton or fabrics that absorb moisture, and wear one of those moisture-wicking fabrics, which will reduce the problem a little bit.

Hope this helps.

Coach Dean

Posts: 14,028
6/30/08 9:53 P

You burn calories through activity, not through sweating. If you are doing the same workout, you will burn about the same calories, regardless of temperature.

Running on the shady side of the road, in early morning or late afternoon when the sun is low in the sky, etc, can all help reduce the effects of heat.


SparkPoints: (0)
Fitness Minutes: (13,457)
Posts: 1,289
6/30/08 8:50 P

i went running today in the hot weather, about 80 degrees and really humid. i could only run for about 15 min with a 5 min warm up and cool down. i usually can run for about 20-25 min. i know we lose more water because we sweat so much, but do we burn more calories working out in the heat? i have searched the net and found conflicting answers...does anyone know for sure?

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