This particular cardio-core move has become a mainstay in a wide range of modalities, from HIIT to boxing to Pilates. It involves holding a plank while jumping your legs in and out, mimicking the ...

Everyone wants a strong core. The first thing I ask every new Drucker Fitness client is what their fitness goals are. To this day, I have never had a client who did not mention having "ripped abs" or ...

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 ...

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 ...