David Bissell's Abs Training

Simple and effective abs training. See the video below:

https://www.youtube.com/watch?v=0JjKHH0Sdds

Full workout:
Hanging leg raises 3x12
Cable crunches 3x12
Oblique crunches 3x16
Decline crunches 3x10 reps, super set with;
Incline leg raises 3x(max amount)
Woodchops 3x16 reps, super set with;
Broom twists 3x20 reps