View post: Skip the Situps. Try This Pilates Exercise to Bulletproof the Deep Core and Expose Exactly Where You're Weak Enter any gym, and you’ll see the same core workout: crunches, situps, ab ...

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.