Today when I was working out in my gym, on an empty stomach, with music on on the cycling machine, I lost hearing in one ear and heard my breathing instead. It was sooo freaky!! I am constantly listening to music and am afraid I fucked up one of my ears!! (its my left ear) Does this happen from working out or breathing too hard or something?? I am really freaked out... My hearing keeps coming in and out. I don't know what to do. Oh, and I am taking about 50mg of ephedra daily, if that matters. If someone knows ANYTHING about this, or nothing at all, PLEASE SHARE IT WITH ME...I am so scared.