TYR Men's Carbon Tri Tank with Zipper Due to the Carbon's exceptional capacity to promote perspiration along with significantly faster evaporation rater, athletes exhibited fluctuation in body temperatures three times lower than when wearing polyester apparel. Athletes wearing Carbon experienced a decreased oxygen need of three liters per minute, along with reduced respiratory rates. Athletes in Carbon exhibited rates four heartbeats per minute lower than athletes wearing polyester jerseys. Athletes exercising in Carbon jerseys showed an approximate 12% decreased in lactic acid concentration in capillary blood.