This no-movement exercise is one of the most reliable ways to measure core endurance, posture control, and spinal protection—making it a favorite among U.S. fitness professionals.

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.

Maintaining a strong, stable core is among the most common fitness recommendations given to everyone from athletes to people with chronic pain. Terms like "core exercise" and "core activation" get a ...

You deserve a better ab workout than crunches. Strength training can help you build an athletic core. Equipment like a slam ball or medicine balls provides a more dynamic workout for gains. Stability ...

Core strength is more than just achieving sculpted abs—it’s the foundation of movement, balance, and injury prevention. A weak core can lead to poor posture, chronic pain, and decreased athletic ...

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

No, you don't need to walk a tightrope or be an advanced yoga master (though if you are, your balance is probably amazing!). Having good balance is crucial for everyday activities like walking without ...

These days, most people understand the importance of basic core strengthening, but functional core workouts are essential for building a resilient body that can handle everything from carrying heavy ...