Sit on an abdominal board and place your feet under the pads or sit on the floor with your feet under an immovable object. Bend your knees comfortably and keep them bent throughout the entire set.
Lie back onto the board or floor with your arms across your chest or hands behind your head.
Curl your upper body up until it is at angle slightly less than 90 degrees to the floor.
Hold this position for a moment, contracting your abs, and slowly return to the starting position.