Do It: Lie faceup with your arms out to the sides, right knee bent, left leg straight and raised a few inches off the floor. Lift your leg until it’s in line with your right thigh and push your hips upward, forming a straight line from shoulders to knees. Pause, then lower to start. Do all reps, then switch legs and repeat.
Weak glutes and tight hip flexors cause your pelvis to tilt forward, pushing your abdomen out and creating that no-good belly pooch. This move evens you out.