I am a disable woman with health problems. I have had both knee replace 10 years ago. I have had two bad falls. A year and half ago I fell and knock my knee cap out of place. They put it back in. The next year I fell again and know the same knee cap out again. I had to have the same knee done with a knee revision, This will only last a few years. So I have got to get this weight off. I am plan to have a sleeve arthroplasty surge. I have been able to loss 18 pounds, I have a long way to go.