Answer to Question #163558 in General Chemistry for Shaina

Question

after exercising on a hot summer day and working up a sweat, you often become cool when you stop. What is the molecular-level explanation of this phenomenon?

Answer 1

as temperature goes up, the human body fights back by dilating blood vessels to give off heat and by sweating. When body temperature returns to normal, the brain inactivates these processes.

Once the body has been alerted that it needs to cool off, its sweat glands become active. There are 4 million of these glands all over the body — everywhere but the lips. The eccrine glands on the foreheads, palms and soles of our feet are connected to emotional signals as well as temperature changes. This is why we get sweaty palms before giving a speech.

So molecular level changes on both when exercise doing its high and when we stop than its low