This simple floor exercise is redefining how Americans train their core—without crunches, machines, or strain on the spine.

This underrated core exercise strengthens your deepest abdominal muscles, improves posture, and enhances total-body stability ...

A strong core is basically the foundation that holds your body together. I mean, your abdominal muscles help with your posture, keep you walking and running, are activated when you breathe — it's ...

Today in Sunrise Shape Up we focus on different types of crunches. Bryan Watkins from Unyque Fitness gives us 5 different variations. The following exercise is designed to engage your abs while ...

NEXT WEEK. MEGAN: THANKS SO MUCH. YOU MENTIONED IT'S A GOOD DAY TO GET OUTSIDE AND WORK OUT. WE'RE WORKING OUT RIGHT NOW WITH SONRISA MEDINA FROM ORANGETHEORY FITNESS. THANKS FOR COMING IN. I KNOW ...

There are so many exercises you can use a stability ball for, especially when it comes to targeting your core. Why? Because this fitness tool, otherwise known as an exercise or Swiss ball, challenges ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. It’s time for a little ...

The same universal go-to that kids play with works just as well as a go-to for exercising adults: A ball. From a hail-size golf ball to those big ol' stability balls you see rolling around a gym floor ...

In the spirit of exploring creative and inexpensive ways to strength train, we’d like to expand on the usefulness of a very simple but versatile piece of equipment: the exercise ball. So many ...

If you haven't added these functional core moves to your routine, do so, stat. They help with everything from walking up the stairs to carrying groceries. Some people add core work into their routine ...