Let me tell you this: it is normal to sweat during exercise. If you sweat a lot, you need to replenish water. Don't gulp water during strenuous exercise, just wet your mouth. If you are really thirsty, drink it several times at a time without buying any sports drinks or anything. A glass of water with a spoonful of sugar and a spoonful of salt is the best supplement! Don't blow if the sweat is not dry, and don't take a bath with cold water. I am a spinning instructor in the gym. You can ask me any questions.