Medically reviewed by Amy Kwan, PT Variations of planks include dolphin, caterpillar, and one-legged planks.Planks help strengthen your core, which improves your balance and posture.People with ...

The key is knowing how to do a plank, however. As good as the exercise is, you have to do it exactly right to reap the benefits. As one of the best core exercises to do at home, the plank can also ...