I copied this from my PT certification textbook for you!
"The reason for profuse sweating is that body core temperature becomes significantly elevated by the increase in metabolic heat production during exercise.
In response to an elevated body core temperature, the brain signals the body to dissipate the excess heat as rapidly as possible. Eccrine sweat glands are then activated, and fluid is transported to the skin so that it can evaporate and create a cooling effect. Rather than indicating a lack of conditioning, sweat dripping off the body may be more indicative of the fact that the humidity of the environment is so high that sweat can't evaporate. All factors considered, this is not an ideal situation, because it may mean that the body is not being effectively cooled via evaporation. On the other hand, profuse sweating can also be a sign of being relatively fit, since one of the adaptations to consistent exercise training is that individuals will sweat more and sweat sooner so that their bodies don't store extra heat."
Just beware if your sweat smells like amonia.
"Ammonia (chemical term is NH3) is a nitrogen breakdown product of amino acids in the body. Amino acids are the building blocks to make proteins in the body. If your body turn to breaking down amino acids for energy (instead of using carbohydrate and/or fat), the nitrogen atom is chemically stripped of the amino acid molecule (which is then converted to glucose fuel) and processes the nitrogen in the kidneys and forms urea for excretion. If your kidneys cannot handle the load of urea, the nitrogen is excreted in your sweat as ammonia.
How can I prevent the smell?
The best way is to be sure you have enough carbohydrate fuel for your exercise. Those who "eliminate" carbs from their diet are setting themselves up for "ammonia sweat." A good pre-workout meal usually does the trick. Also be sure to drink for thirst; adequate fluid intake makes excretion easier.
So the next time you smell ammonia, don’t worry that all your muscle protein is breaking down or that you are doomed to have smelly sweat forever. Look at what you eat before you exercise, add more carbs and fat, and when you finish exercising, have some carbs and fat to replenish what you've used and some protein to help replace the amino acids used for energy and to make your sweat smelly!
