Easy exercising

Who can afford a gym membership these days?? If my finances allowed it, I may buy one, but I rest assured that it would not get used much, and would become a wasted expense. What I do instead is walk for thirty minutes a day. I would like to go twice a day but sometimes getting out the door once a day is a challenge. 

I live in a community where we have lots of grass, but limited side walk. I take our dog out on her lease, and at times without, and we have a good walk between the two of us.