Washing the car for 20 minutes
Credit: KING / Caitlin Murphy
How does this sound - get your chores done, rev up your heart rate and burn calories all at once. Not bad, right? Grab a bucket and sponge, start scrubbing the car and 20 minutes later you will have burned 100 calories. Bonus points if you have to hurry up and get the car washed before you run out of quarters!