Recently my rotator cuffs have been real sore, (or maybe its just shoulders) Because Of Jiu-jitsu training. They espcially hurt when doing certain things. What should I be doing to prevent this? Should I start training rotator cuffs? I recently have been doing 4 sets of rotator cuff work a week. Is that enough? Should I be iceing them too maybe? Any other suggestions will be greatly appreciated !!! I just want to be able to continue to train and not have it become a bigger problem!