You’ve seen Jessica Biel’s amazing legs, Kelly Ripa’s killer abs, and Jessica Alba’s toned and sexy arms. We all wonder how they achieve such rockin’ bodies.

So what are these women doing differently than you?

There’s a specialized training method that these celebrities are using to get these crazy results, and it is one of the fastest methods to get fit in a short amount of time: plyometrics.

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Plyometrics are explosive movements that combine power, speed, and strength by working several body parts at once. Since they recruit more muscles than your average exercise—compare a bicep curl, which isolates only that one muscle, with a move that activates your arms, legs, and core simultaneously, like many of the ones below—you burn more calories not only during your workout, but up to 8 hours after you’ve finished.

While plyometrics are well-known in the world of sports as a way to help athletes improve their game, they're starting to take the rest of the fitness world by storm, and for good reason: In addition to toning and sculpting your legs, booty, arms, and abs, plyometrics help to build strength, increase balance and coordination, and improve cardiovascular health.

Before you jump off the couch and head to the gym, make sure you’re ready to handle plyometrics; since the difficulty level is somewhat advanced, being able to perform a proper basic squat and lunge first is important. Once you’ve mastered those moves, you’re ready to move on. Here are 6 plyometrics that will burn fat in no time:

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Squat Jumps

Start by getting into the bottom of a squat position. Your legs should be slightly wider than shoulder-width apart and slightly turned out. Your chest should be out, shoulders back, and core engaged. From here, explode straight up in the air, allowing your feet to leave the ground. Make sure to land softly on your toes when you come down. Doing this will protect your knees and hips. Complete 10-15 squat jumps.

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Lunge Hops

Start in a lunge position with your right foot in front and left foot behind you with your left knee about an inch from the floor. From here, explode straight up out of the lunge, switching your legs mid-air and landing softly on your toes. You will now have your left leg in front and right leg behind you. Repeat this until you’ve completed 10 total lunge hops.

Photo: Jennifer Cohen

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Skaters

Start at the bottom of a squat position. Jump to the left, landing on your left leg, while bringing your right leg behind your left ankle. From here, jump to the right side with your right leg, bringing your left leg behind your right ankle. This completes one rep. Complete a total of 30Â skaters.

Photo: Jennifer Cohen

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Toe Taps

Find a stable medicine ball, step, or bench. This will be your base for the toe touches. Stand with your feet shoulder-width apart and arms by your sides. Bring your right toe to the edge of your base. From here jump and switch your feet so that your left toe is at the edge of the base and your right foot is now back on the floor. Repeat this for a total of 30 toe taps.

Photo: Jen Cohen

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Medicine Ball Squat Thrusts

Grab a medicine ball and stand with your legs slightly wider than shoulder-width apart. Hold the ball at belly-button height and slowly squat down until your thighs are parallel to the floor or lower. (Do not let your knees extend past the tip of your toes.) From here, explode upwards and toss the medicine ball straight in the air. Keep your eye on it so you can catch it and drop right back into the squat position. Do 12-15 medicine ball squat thrusts.

Photo: Jennifer Cohen

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Medicine Ball Burpees

Grab a medicine ball and stand with your legs slightly wider than shoulder-width apart. Squat down to the floor and place the medicine ball between your feet while keeping your hands on the ball. From here, jump back into a pushup position, making sure your hands are placed securely on the ball. Jump your feet forward until you are at the bottom of a squat again, then stand up straight. Try to do 10-12 medicine ball burpees.

Photo: Jennifer Cohen

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Jennifer Cohen is a leading fitness authority, TV personality, entrepreneur, and best-selling author of the new book, Strong is the New Skinny. With her signature, straight-talking approach to wellness, Jennifer was the featured trainer on The CW’s Shedding for the Wedding, mentoring the contestants to lose hundreds of pounds before their big day, and she appears regularly on NBC’s Today ShowExtraThe Doctors, and Good Morning America. Connect with Jennifer on FacebookTwitterG+ and on Pinterest.