If you are thinking about starting a martial art like jiu jitsu, you might be asking yourself, “Can Brazilian Jiu Jitsu help me lose weight?” Many people have lost weight simply by joining a BJJ gym, even when they didn’t follow a dietary plan. Does that mean Brazilian Jiu Jitsu can help you lose weight? Well, sort of. Though it is not a cure-all weight loss solution, it can help immensely, and it comes down to a few different reasons.