I had never done it before but have this lagging ass shoulder issue and have just become used to the fact It would not go away. figured I screwed my rotator cup up and I was justed screwed. after another night of painful crap I broke down and went to a guy who had been recommended to me, a bit of a drive but what ever. needless to say after an hour of complete hell with some dude physically trying to rip my muscle off the bone I can honestly say my shoulder is ALOT better. this type of massage is not for the timid, I had tears at points but holy crap it works. I would highly recommend anyone with muscle pain go try this out. I prolly will have to go back for a few more sessions over the next few months to complete the fix ( said I was in pretty bad shape.. I have to agree.) but well worth the pain .