Any suggestions on stretches, conditioning exercises, and/or drills to do in preparation for front and back walkovers? I'm guessing a lot of core work needs to be done (prone holds, supermans, bird dogs, crunches, etc.), but shoulder flexibility and whatnot too, right? (Me, not know a thing about tumbling? How ever did you guess?! In all seriousness though, I've done some Googling around the interwebs and whatnot to compile my own list of drills and such for walkovers... but I'd still appreciate anything and everything you wonderful Fiercers can share!) Thanks in advance!