This variation relies more on the hip flexors and deeper core muscles for stabilization and to help raise the leg as you move ...

One for the lower abs; our fitness writer rated this crunch highly for hitting those deeper core muscles. The tabletop tests your abs, especially the lower abs because your legs stay raised.

Crunches, or V sit-ups ... with your left arm and keep your right arm down by your side. Open your raised leg to the right and your raised arm to the left without moving your hips or shoulders.

Do four sets. Mentus also likes this twisting crunch to work the obliques, as well as the rectus abdominis. - Lie on your back with legs raised slightly up and hands next to your head.

Taylor says these leg lifts, also called reverse crunches, are one of her favorite ... Engaging your abs, bend your knee and raise it up to your torso. Pause at the top of the position, and ...

If you want to test your core, skip the crunches and step to the pullup bar to elevate your ab training game. The hanging leg raise might be one of the most underrated exercises for developing all ...