Try these 6 joint-friendly standing moves to fire up your core, raise your heart rate, and help trim belly fat after 50.

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

Core training has always been part of military PT and fitness testing. From crunches to sit-ups, flutter kicks, leg tucks and plank poses, the U.S. military uses many exercises to test core strength.