The wife and I get out and about and try to walk at least a mile a day. Our home has stairs -- 14. We are each up and down 10 - 15 times a day, so that counts for a bit more in the exercise department. I once asked a doctor about stairs. He said, Well by the time you are in your 80's you might fall and break your hip, but without the stairs you might not be around to break that hip. I think his meaning was pretty clear. (-8
Walking, spin bike and dancing (when no one's watching). I also have some gym bits i.e. resistant bands, dumbbells, kettlebell, yoga blocks and push up bars.