If you’re dripping with sweat during Cross Fit, while the guy next to you seems dry… Don’t sweat it! You may actually be more fit than they are! Sports scientist Dr. Lindsay Baker says sweat is how the body cools itself when our core temperature rises. And because a fit person is better at regulating their core temperature, they start sweating sooner – and more profusely – than someone who’s not as fit. You may also be bigger than the runner NOT sweating next to you. Bigger people sweat more than smaller people, because their bodies produce more heat. That’s why men tend to sweat more than women.