Cleaning roof gutters burns about 320 calories per hour and works your upper back, shoulders, arms and legs. Get the hose out and have fun with the kids by washing the cars. After all that winter slush, snow and dirt, it's going to be a big, calorie-burning job. Clean the windows - inside and out - to burn calories and ensure a sparkling outlook on spring. If you want to make spring cleaning an inside job, then get your muscles moving by flipping mattresses, vacuuming - floors, walls, drapes - the whole nine yards. Clear out clutter and make some extra cash by holding a yard sale and selling all your castoffs. Did we mention you'll also save money?