@Gardening with Rabbits , Last week I walked the Indoor Mile. It was a morning with some rain, then it was breezy ... I didn't have any outdoor plans. So, I walked.
The goal is to raise the heartbeat above 100/minute. Nothing very special and it follows the AHA ideas on cardio exercise. I can't do it simply walking in the house, there are too many 180° turns to be made that slow me down although I may cover a little more than a mile in the 30 minutes of time allotted

. I raise my arms above my head about every 4 steps. That does it and gives my shoulders a little exercise, as well.
This was the first day that I've walked the Indoor Mile in months but soon, it will be a part of the daily schedule. I seldom miss a day thru the Winter. There isn't much muscle exercise to it and I notice how much less of an effort it is
after a
modestly active Summer. Still, it is only 30 minutes. It's boring, even if I feel better while I'm doing it. I no longer have Tramp the Dog on the other side of the fence and viewable out of the window. Calico, the cat from across the road, was right along the path beside the house during that day's walk. She spends quite a bit of her time in our yard these days.
We do eat a lot of fruit and veggies in this house. Salt was limited years ago because of DW's high blood pressure concerns. It becomes a matter of taste not to have very much salt on our food. It influences our eating of any processed foods and what is served at restaurants.
Good Luck with Making Some Changes. It's very possible and feeling better may be the result sooner than you might expect.
Steve