Surprise Exercise: 5 Calorie Burning Activities You Already Do and 5 Routine Tweaks to Burn Even More

Offer to Take Out the Trash: 15 Minutes
Calories Burned: 112
Take a walk around your house, apartment, or dorm and gather up all that garbage. If you're feeling generous, offer to take everyone else's trash to the curb, too. It's a stinky job, but someone's gotta burn the calories.