To build strong abs, try a double to single leg v-sit, says celebrity personal trainer Nadya Fairweather (u-shape.co.uk). Starting on your back, lift your head and feet off the ground about an inch.

To chisel your abs and strengthen your core, add some dumbbells to your core workout. Adding some weight forces the fibers in ab muscles to activate more fully, making each rep more effective. This ...

Sit-ups often come to mind when you think about working your abs or strengthening your core. It’s one of the most old-school, well-known exercises for ab-shredding, but recently, it’s become less and ...

Which exercise is better for the core? Planks have a significant advantage over sit-ups in terms of effectiveness and posture. Photo: Getty Images, Collage: FITBOO When it comes to choosing the right ...

Fitness instructors LaToya and Julius guide us in a 20 minute ab workout and warm-up focusing on your entire core, with both standard and modified versions of each exercise. This workout consists of ...

Yoko Hamamura, the MMA fighter who looks like he’s chiseled out of granite, calls the Sit-Out exhausting. That’s how you know it’s going to rock you. Only you don’t have to rock yourself all the way ...

Those morning stretches and at-home pilates might not be enough as one doctor shared an exercise that could determine your lifespan. NBC News medical contributor Dr. Natalie Azar shared with the TODAY ...

(CNN) -- You've heard it before, but the message is still urgent: One in four U.S. adults sits for more than eight hours a day, according to a new study from the Centers for Disease Control and ...