The Sit-up Bench exercises improve the strength of the abdominal muscles and the flexor group of muscles of the hip and upper thigh.

Sit on the Sit-up Bench, with the feet down, held under the support bar. Lie on your back with legs slightly bent. Raise the shoulders and upper body off the bench, feeling the muscular contraction in the abdomen and flexors. Return slowly, Repeat. Resistance can be varied depending on the extent to which the legs are bent -- straight legs providing the most resistance. Also, the further back the arms and elbows, the greater the resistance.