Repetitions: 8 to 12
A. Lie on your back with your legs bent and feet on the floor a comfortable distance from your butt. Place a rolled-up towel between your thighs and hold a three- to five-pound dumbbell between your hands. Use your abs to lift your legs, then extend your arms toward the ceiling.
As you start your figure eight with your arms to the right, also make a figure eight with your knees starting from the left.
Start with your arms and knees about six inches farther away from each other. Be careful not to arch your back.
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