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

A simple medicine ball can transform basic core exercises into a full-body stability challenge. Trainers say this at-home ...

A strong core helps with posture, balance and stability, and can prevent and reduce back pain. To effectively strengthen your core you need to work the low back, glutes, pelvic floor and the ...

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

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. “Right to the core,” “core values,” and “hardcore.” These little idioms highlight just how vital the concept of “core” is in our lives ...

"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 ...

Back pain affects millions of people daily, often stemming from weak core muscles that fail to provide adequate spinal support. The interconnected muscle groups surrounding the torso work together to ...

Named after Olympic discus thrower Virgilijus Alekna, the exercise is a core stability drill that targets total-body tension ...

When most people think of core exercises, they think crunches and sit-ups – possibly because the tactical professions have used them for decades. But given recent changes in military testing, the next ...

Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. Lie on the mat with your arms extended straight up.