The secrets to a celebrity six-pack
4. Vacuum Exercise
The transverse abdominals are the most important muscles to target when you’re trying to flatten your belly, says Paris. They’re hard to reach—but this do-anywhere move hits ’em. Start on all fours with your spine relaxed and inhale deeply. While you exhale, pull your navel toward your spine and hold for 12 seconds. That’s 1 rep. Repeat for 12 repetitions.
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5. Opposite Arm and Leg Raise
Balance and stabilization exercises like this one will strengthen your core and lower back, giving way to a slimmer waist, says Paris. Start on all fours. Then simultaneously lift your right arm straight in front of you and left leg behind you, creating a straight line between your fingertips and heel. Hold for a breath and return to start. Repeat the move, this time using your left arm and right leg. That’s one rep. Complete 20 repetitions.
6. Bicycle Crunch
Round out this routine with the bicycle crunch, which targets the rectus abdominals, the hardworking muscles that hold you upright. Start lying on your back. Place your hands behind your head, and lift knees toward your chest so that both your hips and knees are bent 90 degrees. Curl your head and shoulders off the floor while twisting your torso to the left. At the same time, pull your left knee toward your right elbow and extend your right leg so that it’s about a 45-degree angle to the floor. Repeat on the other side by twisting your torso to the right and pulling your right knee toward your left elbow while you extend your left leg. That’s one rep. Complete 15 repetitions.
VIDEO: Watch trainer to the cast of Glee Bernardo Coppola perform his take on the bicycle crunch for abs