You actually burn more calories when it's cold, but it's a very negligible amount... The heat doesn't directly affect the amount of calories burnt... but well, you de-hydrate at a faster rate in a hot weather, that makes you feel more tired so yeah... you have to "work harder" to burn the same amount of calories.
Being that we have just experienced a quite hot summer, I know that my body feels tired much faster when it is a very hot day. Does the body actually burn more calories, in or does it actually hurt my calorie burn by preventing the body from pushing at the same levels?
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