Brazilian Jujitsu can be painful, so ask your practitioner if it does. It is unpleasant to be taken down, choked and/or locked in a joint. If the practitioner feels it is appropriate, they can cause real pain.
Brazilian Jiu-jitsu can be a great form of aerobic exercise. Regular aerobic exercise can improve your health and prolong your life expectancy. It is vital to get the cardio exercise that you need in order to keep your heart healthy. Sparring is a great way to get in some exercise.
Moriarty et al 17 & Petrisor et al21 investigated BJJ-related injuries during training and competition. They found that injuries are common in BJJ. The studies revealed a high injury prevalence (9/10 competitors sustained at least one injury) 21 as well as a 6 month injury incidence rate (59.2%).