I have a left ankle that used to be stiff as a 2x4 from a sprain I got in the early eighties. I went at it pretty hard trying to loosen it up about three years ago. Spent about a year and a half at it. Works well enough no one can see me limp and it doesn't slow me down much on the bike. Good enough for me. And I enjoy the hard parts of the next MS 150. The rollers remind me that my friends with MS have it way tougher than I do just to get out of bed and do other things that I take for granted each day. God Bless you Lillie, Jerry, Danno, Ron, and all the rest.