http://AskTheTrainer.com/best-ab-exercises.html Personal Trainer Mike Behnken, MS, CSCS This may be the best version of abdominal floor crunches. You basically take half of the bicycle maneuver and perform one side at a time. To perform correctly make sure your bottom leg is off of the ground and your leg which is in the air is at a 90 degree angle. Try this exercise as your first abdominal exercise if you are a beginner. If you are advanced, try this at the end of your abdominal routine. Remember in order to see your abs you must burn more calories than you consume. In order to do see your abdominals and especially in order to get 6pack abs you must eat a clean, healthy diet, and do your cardio. http://AskTheTrainer.com/best-cardio-machines.html