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 ...

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 ...

Another week, another plank challenge — we just can’t seem to get enough of them at Tom’s Guide. As my colleague recently said when trying planks with knee taps every day for a week — the exercise can ...

Planks are widely considered by fitness experts to be a fantastic exercise to strengthen the muscles in your core and elsewhere, no matter your age or physical fitness level. There are numerous ...

A plank is a core exercise that requires glute and leg strength, as well as shoulder stability. To hold a plank, you need to keep your spine neutral and support it with your abdominal muscles. That ...

The plank is one of the most commonly performed core-strengthening exercises, and whether you're getting your heart-rate up at Barry's or at home (using a Class FitSugar video, per chance??), there's ...

A physical therapist explains how a modified side plank with a clamshell strengthens runners’ core and hips to improve efficiency and reduce injury risk.