Colbie Caillat's Super Slim-Down Workout

Reverse Crunch

Target: Abs

• Lie faceup on ground, arms by sides, with knees bent and feet flat.
• Bring legs, knees slightly bent, toward chest, lifting your hips and lower back off ground.
• Lower feet toward ground without letting them touch down to complete 1 rep.
• Do 20 reps.