Well I did it. I am 50 years old had some low back problems and surgery more than 30 years ago. I'm not in the best of shape but I started taking karate classes 2 day per week. I'm 6'1 and weighed 215 two months ago. 'Since I have started karate classes I have lost 15 lbs. wow it is a great workout and it's fun. I may never be a black belt leader but my goal is a green belt. I am feeling really good now. Never thought in a million years that I would take karate. The class I had today was hard for me to follow the younger students had no problem. I am going to stick this out I know I can do it. I may never be a black belt but my goal is to loose another 20 lbs and be more active for my age of 50 years old.