It’s never too late to start exercising for balance, strength and longevity. But as adults get older, their needs change and not all workouts are ideal for seniors.

Recent photographs of Harrison Ford, now in his 80s, cycling with the lean, athletic physique of someone decades younger, have once again challenged the myth that ageing inevitably means frailty.

Making decisions that help your bones grow big and strong is often a priority when you’re a kid. But as you get older—and especially after menopause—maintaining them brings on renewed importance.