Yes! I am a faithful (almost everyday) sitzer. I did a 10 day OJ fast in January. I too had a painful ligament in my knee that had me hobbling anytime I got up, I looked like an old lady at 45! That took a few months, but that's cleared up too. I guess I should mention that I've growing and juicing wheatgreass twice a day as well for about a month. But I just can't believe the change in my heels!