Seeing elderly fit people is my motivation. Luckily, my neighbors fall in this category. 86 year-old married couple: wife takes at least 2 walks every day and does all of the housework, the husband does hours of yard work every day (sometimes he'll just come in my yard and trim stuff out of boredom). When it snows, he shovels his driveway, the sidewalk in front of his house and my front walkway like it's nothing. I was removing a large bush because it was on our fence line and I was installing a fence. When I was gone at work, he dug up the entire root ball and disposed of it, refilled the hole and tamped it by hand in a few hours. He has done this with 3 bushes on our property line, simply because I mention I need to do it. I've seen this man lift an 8-ft couch with his son-in-law and carry it no problem. AND, his ass was injured in the Korean War (literally - he told me his left butt cheek hit with shrapnel from a grenade). It's rare to see people like this in society anymore, and my fiance and I can only hope we're as badass as them.