Due to too much sewing and blogging = sitting down for a long period of time, I often have backaches. At first I figured that it must be due to lack of calcium in my body because I am still producing breastmilk for my 16mo baby but even after religiously taking calcium supplements, I still have backaches. Maybe I should try walking in mbt shoes. This shoe is design as though we are walking barefooted on the sand. It helps improves our posture.