Knee Tucks
Rowers aren’t reserved for cardio — though this will get your heart pumping. Hold a solid plank as you use your lower abs to drive both knees into your chest, without dropping or raising your hips.

Rowers aren’t reserved for cardio — though this will get your heart pumping. Hold a solid plank as you use your lower abs to drive both knees into your chest, without dropping or raising your hips.
Side Plank with Leg Raise

Foam rollers not only loosen up your fascia, but they also add a stabilization challenge to ab exercises. In this side plank variation, you’ll feel your midsection fighting to keep your body steady.

A chaturanga-inspired exercise often done on a reformer; you’ll take this move to the mat. Your obliques work to bring you upright, as the rest of your core stays tight to move you through the middle.

Photo courtesy of CorePower Yoga
A slight twist on a high-low plank move, you’ll flow from a yoga sphinx pose (similar to a baby cobra) into a forearm plank. Try to minimize movement in your hips as you go.

A regular plank is tough in itself. But balancing on one arm? Talk about taking this core challenge up a notch.

Take your abs workout to P.E. class and army crawl your way across the mat. Stay low in a strong forearm plank as you slither your arms and legs forward. Then finish with a side plank to target your obliques.