
Bones naturally get thinner and weaker as we age. A cautious response to this would be to limit activity, but exercise which puts a controlled amount of stress on bones, can help improve density.
It’s a strategy backed by the UK’s Royal Osteoporosis Society, which advises that we should all be doing around 50 reps of moderate-impact exercise “most days of the week”, even for people with osteoporosis. It suggests doing moves like low-level jumps, skips, jogs or hops, with one jump counting as one impact.