I am a busy lady, and don't have time to put in hours at the gym anymore. I want the most bang for my buck, and that means knowing the fastest way to burn calories during the time I set aside for cardio. Here's some awesome info about what machines can pack the most punch! Cycling: Depending on your intensity, bicycling can burn 500-1000 calories per hour, which ranks it among the highest calorie burners, so long as you use it correctly. Treadmill: Running is a full body workout that burns 600-1200 calories per hour. As a matter of fact, running up an incline on the treadmill is the best way to boost your metabolism for hours after you’ve finished that workout. Walking on the treadmill burns far less calories--about 300-400 per hour. Elliptical: You can generally burn about 600 calories per hour on the ellipticals that don’t include arm movement, and slightly more on the ones that do. Using the elliptical burns fewer calories than running because once you get the parts on an elliptical moving, they’re pretty easy to keep moving, and so you expend less energy. Rowing Machine: An incredible upper and lower body cardiovascular challenge, the rowing machine can burn over 1000 calories per hour. To make time go by faster while still maintaining a high intensity, incorporate short periods or distances of very hard pulling combined with easy pulling. Stair Climber: It incorporates tiny-teeny calf muscles, and just a little bit of your backside and butt, but really won’t give you more than about 400-500 calories per hour.