Absolutely. I know a friend who has just entered junior high school. She is a girl with four abdominal muscles, but most girls don't practice vest line. To tell the truth, some people say that it is not good for girls to practice abdominal muscles. I don't think so. Insisting on sit-ups every day can actually make the abdomen firm, but I'm not sure if it's better. I suggest watching videos, tearing abdominal muscles or something.