There goes another 272 calories an hour. Shoveling snow will melt away 340 calories an hour, while riding a snow blower burns 136 calories. Need some wood cut? Chop to it and burn 340 calories an hour. {relatedarticles}Jean Larson, a horticultural therapist at the University of Minnesota, says going green is a great way to improve your health, as gardening not only stimulates many of the senses, but works the muscle groups as well. Larson told Today's Diet and Nutrition, "Thirty minutes of moderate exercise each day reduces risks of heart disease, diabetes, high blood pressure and colon cancer. It's not something you have to go to the gym for. You can go right out your back door." A day of heavy yard work will not only leave your neighbors jealous of your beautiful lawn, but also of your fit body. Stop searching for a great workout and step into your own backyard.