According to the University of Maryland, watching just 15 minutes of funny video can improve blood flow to your heart by 50 percent. For those who follow such things, increased blood flow reduces the formation of blood-clots, cholesterol deposition and other gnarly conditions brought on by sedentary blood.
Well, I don't have 15 minutes of funny video but I do have 40 seconds of amusing video produced by Lovo Films for a company called ZaZoo. Play it 23 times after sucking in some laughing gas and you'll get your workout for the day (not), and perhaps find a thing or two about your own kids to be thankful for too. It is a PG video, but if you are in a public place, I suggest lowering your volume.
Grocery shopping anyone?