I would suggest getting one of the walk away the pounds dvd. Leslie Samsome is the trainer, they have a 5 mile walk one at Walmart, I think I paid $10 for it. You can choose to do 1, 2, 3, 4, or 5 miles. The one minute mile is 12 minutes. I'm not super in shape, just ok, and it definitely makes me sweat! It's low impact and cheap