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.

Core strength exercises for seniors, from trainer Michael Betts. Try 3 bed-position tests to see if your core is top-tier after 65.

This one no-equipment test can reveal whether your lower body strength truly stands out after age 50.

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 ...

Single-leg balance test after 65: what 30 seconds says about fall risk, with certified trainer tips to improve fast.

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 ...

I tried to fix my stability using these five moves.