When the treadmill and stationary bike seem to be getting you nowhere—literally—it is time to look at other cardiovascular exercises so you can start seeing results without getting bored or frustrated.

When you think about cardiovascular exercises, you need to think outside of the box and beyond the basics. Running, biking and rowing are still great activities, but once you can do them without breaking much of a sweat, they lose their effectiveness in really blasting away those calories. Try incorporating at least one of these new and highly effective exercises into your current routine and see what a difference it makes in the way you look and feel. Here are nine great calorie-blasting cardio exercises that will do just the trick: