6. You’ll become more flexible than ever before
Flexibility is a key benefit of doing planks regularly, for this form of exercise expands and stretches all your posterior muscle groups – shoulders, shoulder blades, and collarbone – while also stretching your hamstrings, arches of your feet, and toes. With a side plank added in to the mix, you can also work on your oblique muscles. This will provide you with further benefits when it comes to hyper-extending your toes, a movement that is crucial for supporting your body’s weight.