Start in a high plank position, with your hands stacked under your shoulders, your core engaged, thinking about sucking your belly button into your spine, and a straight line down your back.

A plank is an isometric exercise that involves ... Screw pinkies into the ground and away from the body to activate lats. Pull belly button up towards spine to engage midline.

However, if your goal is to strengthen the entirety of your core and work the smaller muscles to support you in big lifts, you might want to consider other variations of a plank. Lie on your right ...