23:52 05/25/2023 Exercising that all the cartilage in your knees. Jpg 0 (0) a duck’s walk Rubbing your knee joints will hurt your cartilage The doctors told me not to do it How useful was this post? Click on a star to rate it! Submit Rating Average rating 0 / 5. Vote count: 0 No votes so far! Be the first to rate this post.