Gentlemen, I am interested in the book but I have a few questions. I am a 63 yr. old male with degenerative joint disease from head to toe. I have had 60 surgeries in my lifetime and can no longer lift weights. I do some qiqong exercises but I want very much to develop internal power. Is 63 too old to do the exercises and get something out of them? I am on disability income and cant afford classes so thats why I am considering the book. Any advice would be greatlt appreciated.