Back in the day, sit-ups were the exercise of choice to train the core. We didn’t use the term “core” back then, but if you wanted the kind of abs displayed in Calvin Klein underwear ads, sit-ups were ...

In the second installment of our six-part core lab, Tonal Instructors Dr. Liz Letchford & Coach Paul Wright guide you through a workout to maximize your rotation. This conditioning workout consists of ...

You’ve probably seen it all over your feeds: Fitness pros and physical therapists talking about “training the deep core.” But unlike crunches or Russian twists, these exercises don’t come with a pump ...

Hitting that end-of-January motivation slump—or just want to spice up your routine with fresh moves? Meet the quick-yet-intense dumbbell workout that will jolt you and your body back to life. This ...

GUYS WHO WANT abs will do situps until it hurts to cough. But if you want to truly build six-pack abs and have a core that's strong and bulletproofs your spine, you'll want a more dedicated, complete ...

Enter any gym, and you’ll see the same core workout: crunches, situps, ab machines, and endless twisting exercises. The logic seems obvious—if you want stronger abs, more visible abs, you train them ...

While sculpted abdominal muscles are often featured in advertisements, social media posts and magazine articles, there is more to strong abs than good looks. Strong abdominal muscles are key to ...

Editor’s note: Dana Santas, known as the “Mobility Maker,” is a certified strength and conditioning specialist and mind-body coach in professional sports, and is the author of the book “Practical ...

Core training for lower back pain. But does stiffening the lower back really help with lower back pain?When you have lower ...

Core training has always been part of military PT and fitness testing. From crunches to sit-ups, flutter kicks, leg tucks and plank poses, the U.S. military uses many exercises to test core strength.

Busy runners often shove strength training—and core work, specifically—to the bottom of their priority list. Between mileage, work, family time, social outings, and recovery, core exercises can feel ...