This four-move workout from Coleman requires just a single dumbbell, kettlebell, or even a heavy water bottle. All in all, it ...

When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While sit-ups have long been a go-to for strengthening the core, they're not always ...

The classic sit-up is a workout staple. Whether you've become all too familiar with the movement in your weekend HIIT class or eked out those last few reps while following a home workout video, you've ...

Sit-ups and crunches both target your core muscles, but work differently. You can use both exercises to build strength, endurance, and control.

If you've ever wondered (mid-crunch, most likely) exactly how many sit ups you should be doing every day to optimise your fitness, then you're in the right place - this is exactly the type of question ...

Core muscles wrap around the midsection like a girdle, forming a connecting link between the upper and lower body. They support, stabilize, and help move your spine, trunk, and pelvis, and most body ...

It’s kind of strange, if you think about it, that the sit-up should be a thing in the first place. In what world would we have to lie down and sit up repeatedly, until our bellies are sore? What are ...

While typically filed under the “core move” category, sit-ups do more than fire up your midsection. “Sit-ups are more intense and target more muscles than a traditional crunch,” Alison Staples, coach ...

As a fitness editor, I love that deep core shake you get after a minute-long plank. That said, if I’m in a busy gym, or I’m taking my workout outside now the weather is nicer, the chances are I’ll ...

Hafthor "The Mountain" Björnsson has lost 121lbs and now has shredded abs. Core training is particularly important for him right now as he embarks on a boxing career. Björnsson told Insider he does ...