Well I really have all kinds of little aches and pains but if I put them all down it'd fill a book. What I'm here about is the only one that concerns me. It just started a couple of days ago. When I do a lot of upper body exercises and movements, my left arm gets a deep, dull ache. It starts on the inside of my elbow, wraps around to the back of my elbow, then up my tricep to my shoulder. My hand also starts to tremble slightly. Ice doesn't make it better but rest does. It feels like it's in the bone. Does anyone have any idea what's going on?