Learn how to do the Copenhagen plank, a challenging side plank variation that strengthens your hips and core and improves ...

My clients aren’t exactly requesting to do mountain climbers — they are super tough! But they also torch calories and work your entire body. Mountain climbers, named after the challenging workout of ...

The real secret to a sexy stomach is carving out those lines to frame your budding six pack (a.k.a. your obliques). And while you're already well aware that planks help tone your entire core, there ...

I love an exercise that works multiple body parts simultaneously. I love an exercise that makes me feel strong. And I love an exercise that requires no equipment — I like to be spontaneous sometimes.

Your core (that means both your back and abdominal muscles) is your source of power—seriously. It's also what helps stabilize your entire body, prevent low back pain, and impact your posture, helping ...

Sit on a mat with your knees bent and feet on the floor, holding the sides of your medicine ball in your hands. Engage your ...

Most runners can breeze through their daily mileage, but ask them to hold a Copenhagen plank and the wobbling starts ...