21 Cardio Workouts That Aren't Just Running

Yes, it seems like running. No, it's not exactly running. A sprint, in its truest form, is very different from a traditional distance run. When you run, say, 3 miles, you're aiming to conserve energy as much as possible, keeping your arms steady and running in very upright fashion.

A sprint? Now, instead of bouncing lightly off the ground, you're attacking the ground to create speed. You start with your chest forward, aggressively swing your arms, and slam into the ground with every footstep. It's an explosive, powerful act, and yes, it can blast fat.

The key to sprinting is realizing that a true sprint can't last long; at most, you'll get 200 meters if you're really going hard. But battle through 10 100-meter sprints with, say, a minute between each, and you're workout's over in around 15 minutes, but you've still destroyed plenty of unwanted calories.