Good news! For those of us who do all of the house cleaning without help from maids or cleaning services, we're saving more than money. We might also be extending our lifespans! According to an article in Prevention, by simply "vacuuming, mopping floors, or washing windows for a little more than an hour, the average person can burn about 285 calories, lowering risk of death by 30 percent, according to a study of 302 adults in their 70s and 80s." I like the sound of that. And now, I'm going to go get out the Dyson and do some vacuuming.