Not sure what is going on with my left calf muscle, but it really hurts! I did walk/jog yesterday and stretched before starting. Several hours after my workout though I was walking across the dining room and felt a sharp stabbing pain in my leg. It is slightly better than it was last night but I still have a very noticeable limp when I walk. If it doesn't get better I am going to have to figure out some other exercises to do.