A lot of celebs endorse this notion that they can eat whatever they want and “sweat” it all out in the gym the next day! A few trainers also support the theory that more sweating means greater fat burn. That’s why, there’s a big myth flying around that profuse sweating in summers will help burn more fat! Sweating is a natural process through which the body maintains its core temperature of 98.6 degrees Fahrenheit, and in summers, this process helps the body remain cool. Sweating brings to the skin’s surface water, salt, and electrolytes to dissipate excess heat, and you can lose water weight temporarily through sweating. Unless you are doing exercise or intense physical activity, you are not really burning any significant calories with just sweating. So, spending time in the sun, with profuse sweating, will not drain away calories. Still not convinced" Read on why excessive sweating in summer does not really mean more fat burning.
Sweating, is just a natural mechanism through which the body cools down. When the body’s temperature rises, the hypothalamus region in the brain signals sweat glands on the skin to produce sweat in order to cool down the body – irrespective of whether the rise in temperature is from an exercise routine or from the heat and humidity outside. As the sweat from the surface evaporates, it helps to lower the body temperature. So, even if the numbers are dropping on the weighing scale after a sweat session...