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 ...

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 ...

When it comes to getting the most bang for your workout buck, high-intensity interval training — or HIIT — is hard to beat. By frequently changing up your pace and type of movement, HIIT challenges ...

Doing burpees can help you increase strength and fitness. But exercises such as kettlebell swings, plank jacks, and bear crawls provide similar benefits with a much lower impact on your body. When you ...