No, according to human physiology professor Dr. Juan del Coso. He says a tiny amount of toxin is released in sweat, but not enough for measurable health benefits. If we really need to purge toxins, our kidneys release it into our urine. And as far as sweating out toxins in a sauna – that may actually backfire. Because when we sweat profusely, our body thinks it should conserve water, so we pee LESS! So we end up hanging on to any toxins longer! If you really feel you have to detox, your best bet is to load up on produce and water. That’ll help move things through your system faster.