If you’re over the same old sit-ups and crunches, why not invite a kettlebell into your core training? Here’s a simple ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images If you’re repping out endless crunches on a mission to strengthen your core, ...

From dance cardio to heavy lifting, Crunch Fitness offers a little something for everyone. Corderro visited the brand-new ...

You don't need crunches to get a flat stomach. You need full-body workouts that utilize multiple muscles to learn strength, and squat, and define your midsection.