Pilates pro Simone de la Rue demonstrates how to do a plank jack—aka the ultimate cardio and core-strengthening move—with proper form. A little known fact about planks: In addition to working nearly ...

Plank jacks are a dynamic exercise that combines the core-strengthening benefits of planks with the cardiovascular boost of ...

Planks and jumping jacks are perfectly fine workout moves. But if you combine the two together, you can actually get an even better total-body workout. Meet: the plank jack! Plank jacks involve ...

The plank is a simple yet highly effective bodyweight exercise that builds core strength and stability using the benefits of isometric contractions. This foundational move is crucial for anyone ...