Early one morning about eight years ago, my mom, then just shy of 90, stood at the door of my home office and said that her left arm hurt between her shoulder and elbow. Scared she was having heart problems, I called our family doctor, who sent Mom for a full day of cardiac testing. One test required her to walk on a treadmill. The staff hovered, worried that she’d lose her balance and tumble off. The attention was unwarranted. She easily kept up and even had enough breath to inform her attendants: “You know, I work out with a personal trainer every week.” She still does.
Mom has always valued exercise, and I’m convinced — along with her doctors, who are backed by a strong body of research — that her longtime fitness habit has slowed her decline and kept her in generally good health. (That pain in her arm turned out to be nothing.)