For years, sit-ups were considered the ultimate ab exercise. But modern research shows they’re not the safest or most ...

We’ve said it before, and we’ll say it again: when building a strong core, sit-ups aren’t always the best option. Not only can regular sit-ups and crunches put strain on your lower back, you’re only ...

The starburst side plank variation strengthens the shoulders, abs and obliques. Here's why we love it at Tom's Guide.

This summer, you’ll need a reliable bank of abs exercises to strengthen your six-pack muscles and sculpt muscle definition across your torso. To get the ball rolling, add these exercises to your ...

Find out how many sit-ups after 55 signal a strong, healthy core and use this 60-second test to track your strength over time.

Master these classic core exercises (they're not the same!). Javier Zayas Photography/Getty Images If you’re a fan of core exercises, chances are both sit-ups and crunches are a staple of your workout ...

From the diaphragm to the pelvic floor, scientists say improving your core strength can protect your spine and help you move ...

Strengthen your core and slim your midsection with these five simple chair exercises that target your abs safely after 60.

The notion that sitting isn’t good for you isn’t new – but if you think that running regularly cancels out the negative side effects of sitting all day, you’d be wrong. Research indicates that no ...

This ridiculously hard L-sit exercise works your entire body without moving a muscle. These are the progressions you can use to get strong enough to do it. Everyone likes a good challenge. That’s why ...