Finally, far from focusing on a flat stomach, your deep core muscles work your pelvic floor and diaphragm. Your pelvic floor muscles are a group of muscles at the base of your pelvis, and ...

A) Lift the ball straight up overhead (not behind you). Keep your back straight and stay on your toes – your feet should be ...

Landmine rotations strengthen your core, hips, arms and shoulders without hurting your back. Here's how to do them.