Exactly, and especially and the advanced age of his parents, any active should beat no activity. My grandparents (85ish) do the same, they go on walks and occa

Exactly, and especially and the advanced age of his parents, any active should beat no activity. My grandparents (85ish) do the same, they go on walks and occasionally bike rides together. Not very far, around 5km. But it beats just sitting around doing nothing!