Stiff Shoulder

hmm...today its suppose to be my woodshed day but its unforunate that I didn't sleep well and work up with a stiff right shoulder and I went wtf I'm gonna woodshed anyway and after doing simple warmups and some simple scales for bout 30 mike, I actually started to feel my forearm to cramp man....scary stuff stop practicing right away I didn't even do much after wards and ended up watching Helen of Troy...