How do I protect my shoulders in BJJ?

Shoulder injuries in BJJ commonly occur from kimuras and americanas applied too quickly, posting on an extended arm during sweeps or takedowns, and repetitive strain from gripping and pulling in gi training. The rotator cuff muscles stabilize the shoulder joint and are often underdeveloped relative to the larger muscles used in grappling. Strengthening exercises like external rotations, face pulls, and band pull-aparts build rotator cuff resilience. During training, tap early to any shoulder lock. The difference between a submission and a serious injury is often a matter of milliseconds, and shoulders do not give much warning before ligaments tear. When being swept, tuck your arms rather than posting with a straight arm. When passing guard, maintain strong frames rather than reaching with extended arms. If you have existing shoulder issues, avoid positions that put the shoulder in extreme ranges of motion under load.