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

Start on your back with your arms straight above you, and your knees in a tabletop position. Engage your abs, then raise your ...

If you’re a little hazy on the difference between sit-ups vs. crunches, you’re not alone. They both strengthen your core, but the details on how they differ and the benefits of each can be confusing. ...

They’re often lumped together as “ab exercises,” but crunches and situps aren’t the same thing — and choosing the right one can impact your results (and your spine). So, if your goal is stronger abs, ...

Imagine this: You’ve fallen flat in a field, an entire football team is barreling toward you — and no one’s around to lend a hand. Could you get back on your feet? If the answer is no, it’s time to ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." If your body were a bicycle, your abs and back muscles—your core—would be the frame. You need a ...