Locker rooms are fraught with uncomfortable circumstances. Many people are self conscious and insecure about their bodies. Many who are not so insecure enjoy leering at others and comparing physiques. This is true for both men and women. If it bothers you a lot I feel sorry for you but nobody is going to protect you from being leered at, not the coach, not other teammates, not parents, not school administration. Gym class is a whole other matter.