Flat Abs Fast: Core-Sculpting Resistance Workout

Baseball Swing

Targets: Shoulders, back, arms, abs, and obliques

-- Stand with feet hip-width apart on center of tube, cross it once or twice in front of you, then grasp a handle in each hand, arms by sides.
-- Bend knees slightly in a half squat and bring both handles together in front of you, elbows slightly bent, palms nearly touching. Make it easier: Cup both hands around both handles as if they were fused together.
-- Keeping elbows bent, bring both hands together over right shoulder as you rotate torso to right, pivoting on left toes and straightening both legs.
-- Slowly return to half-squat position.
-- Do 8 reps. Switch sides; repeat.