The Benefits of Planking Planks are a simple, time-efficient exercise that can deliver big results. In just a few minutes each day, you can build core strength, improve posture, and boost flexibility. A plank is an isometric exercise, holding a push-up-like position that activates your abs, back, shoulders, and even your glutes. It’s an ideal move for building full-body strength without any equipment. To get started, lie on your belly, bring your elbows under your shoulders, and lift your body so it’s aligned from head to toes. Start by holding for 15-30 seconds, gradually increasing as you get stronger. You’ll find planks are easy to modify—add time, switch to a…