4 Weeks to Gorgeous Abs Workout

Lower Back, Hips (Iliopsoas), Glutes: Ball Opposites

• Lie facedown on top of a stability ball with palms on ground under shoulders, legs extended, and toes on ground.
• Squeeze glutes to lift right leg straight up while extending left arm out in front, keeping abs tight, shoulders relaxed, and head in line with spine.
• Hold for 1 count; lower.
• Switch sides; repeat.
• Do 16 reps, alternating sides.

Originally published in FITNESS magazine, July 2008.