Woohoo to feeling better!!!! I think mine has lasted a year and half It pretty much depends I really can't recall a 100% day in a little while but when I do get them it's awesome and I enjoy it, even abuse it because then I am down and out again. As far as the shoes I can tolerate platform shoes because it does and even lift all around, but after too much walking I feel the burn up and down the spine. Enjoy your fourth and your GOOD DAY!!!!