There aren't a lot of exercises that can claim to improve pelvic floor health and heart health in one, but the jack plank ...

Medically reviewed by Amy Kwan, PT Planks, which have elements of Pilates, yoga, and stretching, require little space. They ...

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 ...

What’s the best exercise for strengthening your abs? Ab crunches? Plank? Bicycle crunches? A combination of all three? Whatever form of torture you prefer, building a strong core – which includes your ...

Presented by Athleta, this HIIT workout is basically a guaranteed confidence boost. Celebrity trainer Amanda Butler leads you through two different rounds of full-body interval training, helping you ...

Jumping jacks, a staple of school gym classes, are not just for kids—they can also reveal much about your health. Even if you haven’t done the exercise recently, your ability to do them today can ...

Right when you thought planks couldn’t possibly get any harder, you find out that rocking planks exist. Not only does this move require you to hold a plank — as per usual with plank variations — but ...

Jeff and Stu of Xfa Fitness demonstrate how to work your abs and have fun while doing so. Try these "Plank Jacks" to work your abs, your arms, and your heart all in one shot. Check out more of Jeff ...

The "Us" and "Black Panther" star is all about making tough workouts fun, so doing plank jacks to Beyoncé is right on brand. In this case, she also made the moves accessible by modifying the push-up ...