In TODAY.com's Expert Tip of the Day, a trainer reveals her favorite exercise for a more defined waistline and strong core ...

The core is one of—if not the most—important area of your body to train. And it becomes even more crucial with age as muscle ...

It's one of the PT’s go-tos when training athletes. ‘I've used this exercise extensively in my work with elite British and US sprinters as part of their core conditioning. It’s one of the most ...

These 5 chair moves target lower abs and obliques to help tighten your midsection and improve posture after 50.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." That's why it pays to dedicate focused training time on your core. You can start with these ab exercises ...

Learn how to do the Copenhagen plank, a challenging side plank variation that strengthens your hips and core and improves ...

Many think of the practice as stretching, but deep core exercises in yoga are one of the "most powerful ways to build ...

Sit-ups can be a great way to strengthen your abdominal muscles that sit around your stomach. But they can quickly get repetitive and its easy to accidentally lose your form, so when boredom strikes, ...

These days, most people understand the importance of basic core strengthening, but functional core workouts are essential for building a resilient body that can handle everything from carrying heavy ...

So long as you’ve built up some baseline level of mind-body connection, you might have a sound idea of which muscles you’re tapping during a specific exercise. You know that, for instance, deadlifts ...