When I had knee replacement surgery in my right knee last year, I started to use my left foot on the pedal and found it to make more sense when using the knee lift. However, somehow I reverted back to using my right foot. This July I attended 3 quilting retreats, which were some distance from my home. Two were 4 days and 1 way 6 days. Between the driving and all that quilting, would you believe that I got plantar faciatis in my right heal!!!! It hurts sooooo bad that now I'm back to using my left foot on the pedal. You just can't keep a quilter down!