11 Core-Stability Exercises That Do More For Your Abs Than Crunches Ever Could

If you're ready to upgrade from the plank, the plank with shoulder tap variation will ignite your core, shoulder, side, and back muscles. This move is more challenging than your standard plank because you have to keep your torso stable as you alternate, lifting each arm off the ground.

• Start in a plank variation with feet slightly wider than your hips.
• With control, slowly tap your right hand to your left shoulder, keeping your core stable and avoiding rocking your hips. Then return your right hand to the mat.
• Repeat with your left hand, bringing it to your right shoulder. That's one rep.
• Do 10 reps.