Knees to Elbows
This exercise helps to build abs and the inner core.
1. Begin by hanging from a pull-up bar.
2. From and extended, hanging position, raise your knees, past your chest, rounding your back, until your knees touch your elbows. Do not touch the biceps of the arms; you must touch the knees to the elbows else the real essence of the exercise is lost.
3. Lower back to starting position in a controlled manner and repeat for next repetition. Remain hanging until all reps are completed.