There’s a sneaky little shift that can happen as we get older, and if we’re not careful, it starts running the show. We look backward more than forward. We think about what we used to do.How we used to feel.How things used to be “easier.” And just like that, we start comparing our current selves to a past version, who, let’s be honest, had a completely different life, schedule, and set of responsibilities. Not exactly a fair fight. But here’s the thing: possibility doesn’t

When Kim’s new grandbaby comes to visit, she doesn’t think twice about carrying him up and down the stairs. Between visits, she carries a 15-pound weight on those same stairs — just to stay ready. That’s the kind of practical, purposeful thinking that defines her approach to fitness at 70. Since joining a gym with her husband, Rick, 74, last year, Kim has lost 25 pounds and dropped a clothing size. But those numbers aren’t really the point. “I’m more fit now than I was 10 yea