I've been working pretty hard on my core/abs for the past several months now and i'm looking for the advanced core work outs yall might know. regular crunches aren't really cutting it anymore. The harder workouts i do now are hanging leg raises and the weighted ax chops. so what have you got?

A recent study in the National Journal of Strength and Conditioning Research outlined the importance of core training for cyclists. The title of this study was "Relationship Between Cycling Mechanics and Core Stability". The purpose of the study was to determine whether cycling mechanics are affected by core stability.