I’ve been dancing since I was 3,” says Juliet Doherty, an 18-year-old ballerina. “When I was training, I was told protein, protein, protein all the time, but I would get so lethargic.” In an effort to increase her stamina, Juliet started eliminating meat from her daily menu little by little and began seeing an improvement. By the time she cut out all animal products, Juliet knew she was onto something. “With a vegan diet, the…