Body weight exercises routines can be done anywhere. It could be a combo of stretches, push up or sit ups. And it’s equipment free. So no set up or clunky kit. Maybe it’s at an airport during a layover or in a cramped hotel room to remedy jet lag.
Going for a run is the same thing. All you need is a pair of running shoes and the side walk is your running track. I think the reason soccer is so popular is that all kids need is a ball and friends. Their soccer field can be a parking lot or a patch of dirt.
Ease of exercise is the key. Forget the fancy equipment or the expensive gym membership. It’s low stress on your body, and as your body ages you can adapt.
Get into a routine that’s first thing in the morning, and make it easy to start. Outdoors is always better, so choose an open space or park nearby your home. If that’s not an option then do it at home, but lower the barrier to entry and make it easy to start.