Hello, don't wear cotton-padded jacket. Cotton-padded jacket absorbs sweat, and water is not easy to evaporate. After sweating a lot, it will stick to the body, causing friction between clothes and skin. If possible, you can choose tight-fitting compression underwear, which can not only reduce wind resistance, but also stimulate blood circulation and accelerate the decomposition of lactic acid. If there are no conditions, you must wear quick-drying clothes. Thank you.