Directions
Lie flat on your back with ab mat underneath and legs out in front of you. Hold onto Smith-Machine bar or solid object behind you for stability. Legs should be 3 inches apart. Begin by contracting abs to raise your feet off the ground until your toes are pointed at the ceiling. Remember not to let your lower back arch off the ground. Slowly lower your legs to starting position without resting on the ground. Repeat this movement for all reps.