24 Fat-Burning Ab Exercises (No Crunches!)
Oblique driving-knee crunch
Lie on your back on a stability ball with your feet hip-distance apart on the floor and knees bent to 90 degrees. Place your right hand behind your head and your left fingertips on the floor for balance. Brace your core and lift your left foot off the floor. Extend your left leg, foot flexed.
B. Crunch up, twisting your right shoulder and rib cage toward your left knee while simultaneously stretching your right leg straight (keep your foot on the floor). Return to starting position (left leg lifted and right leg bent); that's 1 rep.
Do 15 reps, then switch sides and repeat.
Watch the video: How to Do an Oblique Driving-Knee Crunch
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