When we sweat during exercise?
Water and body salts. The kidneys regulate the system (it’s bloody complicated), but all you need to know is that you need to replace the water and minerals you lose through sweating as the results of dehydration are quite serious. No fat whatsoever is sweated. If you’re thinking of weight loss during an exercise session, it’s all the water (water volume is used to calculate weight as 1litre of water is the standard of 1kg of weight). Boxers tend to do the sweat thing just before a weigh in so that they can make a certain weight, but they then go and drink before the fight. That’s why they brought in a second weigh in – to stop boxers going to dangerous extremes of dehydration before a fight. Weight loss over a longer period due to exercise works on an entirely different system in which fat is “burned” to release energy for the exercise. Fat is basically a way of storing energy – sugars cannot be stored, so are converted to lipids (fats) in the body. When the short term supplies of sug
