There are countless ways to burn calories and develop cardiovascular fitness at the gym—like running on a treadmill, using an elliptical, or, if you’re so inclined, jumping and twerking in a Zumba class. But there’s nothing that shocks the system like a well-run boot camp.
In boot camp, you’ll get a total-body workout led by a drill-sergeant type who pushes your body full-throttle to the point of failure as you circuit through cardio and strength exercises in quick succession, working every muscle group in a fast-paced, 30- to 45-minute session. Boot camp will have you shredding fat while maintaining lean muscle, increasing your endurance. It’ll also pump up your metabolism so you continue to burn calories hours after your final rep. Ready to enlist? Here’s how to do it.