http://news.yahoo.com/bolivia-records-aymara-herder-123-years-old-202553434.html One of my grandmothers lived to be 103. She would have gotten to 123, but broke both her hips in her 90's and this forced her to become physically inactive the rest of her life. She went downhill steadily after the bone breaks. I have to wonder how these long-lived mountain peasants avoid the bone deterioration that leads to hip breaking in the very elderly. Is it simply walking? My grandmother never walked, but she cleaned the house everyday, and did the usual amount of leg use of a homeowner.