After many years in the army, running, jumping out of airplanes, overseas tours and everything in between... I live with pain, and have many tools to deal with it. The Hunkering stool just became one of my go to tools. Now praticing Tai Chi, yoga, and barefoot running.. I know I have a weak core and bad knees. Not a great combination. Just in the two weeks I've been using this stool, I've noticed how much flexible I am during the day, or yoga or whatever I'm doing. I can't wait to buy another fo...