I can't believe it. It's a miracle! I was determined that I would be able to jump some day but I never believed it would be possible so soon. Yesterday, I did 20 jumping jacks at one time. How is this possible? I couldn't do one comfortably on Oct. 1, 2010. I have only lost about 5 pounds but I have gained muscle. I wonder what I'll be able to do by Christmas if I keep up the good work?