It’s not easy for the staff of SWAT All Stars in Fairfield, California, to train an athlete who has double medical trouble—varicose veins and asthma. The varicose veins can be particularly worrisome when even minor injuries happen on the floor, as they make it difficult for the athlete’s body to produce a scab after bleeding. “In cheer, athletes are always [prone] to being cut, but for her, a simple cut could become an emergency,” says Andres Cantero, the gym’s administrative director.