All of this depends on what you are trying to get out of your training? Is this purely for aesthetic reasons? Or for performance/sport?
You should try not having your self esteem dependent on others approval.To me, focusing on aesthetics is the better part of performance training.
As in, I dislike the idea of compromising aesthetics to give a supposed performance advantage, cause I find it's mostly untrue.
I perform best when I feel best, and I feel best when I look best and chicks drool at me.
So I guess you could say performance..... in the bedroom.
Yeah, deduction at this point = they're all inferior to conventional ab crunches.
Ab wheel is decent, get some nice stress across the stomach, but I did some crunches this morning and no machine compares to them;
Normally I don't do crunches, it's legs raises or front levers or something, but to hit the lower abs in particular I think crunches may be top of the food chain?