wrestlers who are desperatly close to making weight dont need to run off weight that isnt even there body weight! after not eating and working out for hours on end, it seems pointless to continue this for a singlet, ive wieghed myself with a singlet on and then without one right after, our singlets wiegh 9 ounces, that may be just ours and other singlets may weigh less. over half a pound can make a huge difference