You know, my grandparents (on both sides) always told me that age is a matter of the mind. Both my grandfathers spend the majority of their lives in labor of some kind. My Grandma Grogan was a seamstress first for a factory then for herself. My Grandma Koch stayed at home and kept four kids and a husband clothed and fed. Both of my grandmothers are no slouches when it comes to giving a helping hand. In their day they could have hauled wood, rustled cattle, bailed hay, etc. right alongside they boys if they needed help (one of many things I admire them for).
With that background they still believed age was all in your mind. I’m not sure that I’ve felt that way. That is kind of amazing to me and something that I aspire to.