Your heart rate and other reactions to exercise take a while to return to normal even if you stop exercising, so you are still sweating as much as you were when running or whatever, but your muscles are no longer producing the huge amount of heat that they were, so where before the sweat was evaporating now it is just running down your body.
Your heart rate and other reactions to exercise take a while to return to normal even if you stop exercising, so you are still sweating as much as you were when running or whatever, but your muscles are no longer producing the huge amount of heat that they were, so where before the sweat was evaporating now it is just running down your body.