– when a person sweats, where does the fluid come from? For example, when you run and begin to sweat from your forehead, where was the sweat being kept before it comes to the surface and leaves your body?

Question

– when a person sweats, where does the fluid come from? For example, when you run and begin to sweat from your forehead, where was the sweat being kept before it comes to the surface and leaves your body?

In: Biology

Answer 1

It comes out of your blood. All your bodily fluids come out of your blood. Sweat. Spit… etc… Your kidneys filter your blood and produce copious amounts of urine which, ideally, is quite blood free. You do not have some separate fluid system just for water.