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

Maintaining a strong, stable core is among the most common fitness recommendations given to everyone from athletes to people with chronic pain. Terms like "core exercise" and "core activation" get a ...

Physical trainers and rehabilitation specialists are increasingly focusing on a critical but often neglected muscle group that could be the key to improved core strength, better posture, and reduced ...

"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 ...

Get the most out of your rotational core exercises with these small tweaks that will help strengthen your abs, especially your obliques. Twisting, or rotational core exercises, are great for ...

With so many variations out there, it can be challenging to understand what functional core training truly is. But the key is to redirect your focus away from a specific set of exercises and towards ...

A fitness trainer explains exactly how to program your own lifting workouts to tailor them to your needs. This formula is all you need to hit your goals.