There are a few ways that you can get stronger in boxing league Roblox. One way is to practice your punches on a punching bag. This will help you to build up your strength and stamina. Another way is to spar with another player. This will help you to learn how to better use your punches and also give you some good exercise. Finally, you can try to join a boxing gym where they will have professional trainers who can help you to improve your skills.