You know, a good bike workout is great for your glutes! :P (Mine usually kill me for the first couple days after I start biking.)

Been hitting the gym pretty regularly, for the past week-and-a-half, I'd say.

Two weeks ago, I could not do the butterfly stretch. My knee wouldn't bend that far.

Saturday, I was able to do it. (It looked like a long tall diamond, knees bend less than 90 degrees, but I did it.)

Yesterday, I sat down and did one that looked "like a normal person" instead of someone with bad knees. My feet were probably 12-18" from my body... Not bad. (I do the stretch for my hips, not my knees, so that's just where it came naturally.)

Most of that progress is due to the recumbent bike.