Sometimes (or so it seems to me) Medium makes it hard to find where to reply when one gets email notifications.

Somewhere I suggested sex, but I suppose you'd have to include long vigorous full body massage to make it fully aerobic!!

I didn't mention a whole array of sports - I suppose you're beyond the age of basketball or football, but what about golf or other more sedentary sports? Better than nothing.

But really, you don't think learning to play a musical instrument would be fun?