Exercise: Pilates

My knee is hurting while walking downhill or stepping down stairs. I think it is improper to jog or do any other exercise which will increase the load and body weight onto my knees, but I do need to do certain exercise. I found this exercise Pilates might be something I can try.

Pilates (wiki)

Jen Sinkler's Porta-Pilates

Real Pilates Web site: with some free downloadable workouts