Like when for example lying at the beach all day doing nothing, sometimes in the evening it feels like one had done hard physical labor?
In: Biology
When you’re in the heat for long periods of time, your body responds by sending fluids and blood to the surface of your body to try and cool it down. Even though you might just be sitting or laying there, for your body this is a lot of work as your heart and metabolic rate go up, leaving you feeling depleted.
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