Well that gives me hope because I can't really walk for more than say 30 minutes outside on the roads here. My treadmill is not working right now, it has one speed really really fast. I need to call a tech to come out and look at it. I was walking for 30 to 40 minutes at a time but this last fall on my knee kinda screwed that up. I am supposed to get an MRI soon because the x-ray came back not so good. So I am inspired to get walking even if it is just a short ime everyday...Sue