Bonus Belly-Flattening Routine Got a pooch problem? Try these five moves to tighten your tummy. Butterfly chest lift Targets: Abs Lie faceup on floor with knees bent, soles of feet together, hands behind head. Contract abs and lift head, neck, and shoulders off the floor, reaching arms toward feet. Return hands to head and lower to start. Do 10 to 15 reps.