My mom had four kids and lost the baby weight every time just by chasing us around and lifting soup cans or whatever she could find around the house (I like to use this as an example when fatties say they can't afford a gym). We couldn't afford a gym back then, and frankly, I don't think they had as many to choose from. I think she also did chair exercises like that old lady on PBS when we were napping. She also loved Sweatin' to the 80's and she set a great example for us, because we would do it with her as we got older.