What do you get if you cross a jumping jack with a plank? A plank jack. This killer dynamic core move is as intense as it sounds, as you engage your stabilizer muscles to secure your body as you ...

Plank jacks are one of my favorite fat-blasting exercises. They fire up your abs — fast! — and strengthen your body from top to bottom. This classic move builds serious core strength to help ...

Plank jacks are a combined cardio and core-strengthening exercise. They can help you strengthen the muscles of both the upper and lower body. Adding plank jacks to your exercise routine a few ...

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 ...

You've got your jumping jacks dialed, and you know how to do a plank . . . but have you tried plank jacks? This intermediate bodyweight move has likely cropped up in your workouts at some point ...

Here's what happened when our fitness editor did walking planks every day for a week. Plank jacks: To do a plank jack, start in a plank position, with your arms extended, your hands under your ...

Jumping exercises include all these muscles in the plyometric training session. Plank jacks, for instance, work wonders for the core, shoulders, and lower body muscles. Burpees consist of a ...

Do three sets of 20 reps, resting for 30 seconds to one minute between sets. With plank jacks, you get the core recruitment of planks, plus the heart-pumping cardio aspect of jumping jacks.

A roof jack is a plank that creates a flat, stable surface for you to stand on and is essential for roof work. Roof jacks are ideal for all kinds of roofing projects as they're easy to set up and ...

Begin with a straight-arm or forearm plank. Gently jump your feet in and out as you would with standing jumping jacks. Land softly, and keep your pelvis steady and your back straight.

You've got your jumping jacks dialed, and you know how to do a plank . . . but have you tried plank jacks? This intermediate bodyweight move has likely cropped up in your workouts at some point ...