The exercise abdominals crunch machine primarily works the muscles Abdominals and secondarily works the muscles Oblique abdominals.

Proper position Position yourself seated on the machine, elbows on the cushions. Your knees should be shoulder width apart. Movement Bend your abs forward. Extend your abs back. Breathing Exhale while bending. Inhale as you return to the initial position.

Proper position Position yourself seated on the machine, elbows on the cushions. Your knees should be shoulder width apart. Movement Bend your abs forward. Extend your abs back. Breathing Exhale while bending. Inhale as you return to the initial position.