Grab a resistance band, because this simple movement is one of the most important things you can do to sculpt your abs. "Flutter kicks force you to target your lower abs while crunching forward just enough to also hit your upper abs — but be sure to keep your entire core braced throughout the set," Kendall said.
- Lie flat on the floor with both feet looped into a resistance band, as shown. Raise your legs off the ground to ensure that your feet are firmly in the loops.
- Straighten your legs so your heels are a few inches off the ground.
- Slowly kick one leg up a few inches higher than the other, alternating your feet while retaining tension in the bands with your hands. Count the rep once both feet have kicked up and returned to starting position.
- Do not lean forward to perform this movement and keep any bend in your knee to an absolute minimum.
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