Planks are in the top 10 of the best abdominal exercises to do, according to to the American Council on Exercise. There's no doubt about it that planks have become a go-to strength exercise which has great benefits for the whole body. If you have not yet harnessed the power of the plank then it is time to find out what's so great about them! What is a plank? A plank is what is known as an isometric exercise, which means that during contraction you do not change the angle of the joint or the muscle length.

