You may have noticed several circular red marks on the 2016 Olympic athletes this year. This is from cupping therapy, widely practiced in China. The therapy is gaining some steam with athletes in hopes that it can help them recover quicker during this year's games. The most prominent athletes that have tried this therapist are swimmers, but other athletes are also claiming benefits from the practice. While science can't quite verify the therapy's benefits, it's thought to bring about a mild immune response and increase blood flow to the skin.