1. Stand between the bars, facing outwards;
2. Keeping a straight back placing both hands on the parallel bars;
3. a) Raise your knees up towards your chest to work the abdominal muscles;
b) Or alternatively try dips: lowering your body between the bars to work the shoulders, biceps and triceps;
4. Slowly return to original position maintaining a smooth, controlled movement during the exercise;
5. Increase repeat as fitness improves.