Your core is so much more than a six-pack—it’s the powerhouse that supports your every move, from lifting groceries to crushing a workout. Training it properly means going beyond crunches and mixing ...

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.

Your core is so much more than just abs—it’s the powerhouse that supports posture, balance, and everyday movement.