Someone suggested that pulling/sucking in your abs during each rep of an ab exercise will develop flatter and more symetrical abs.
I've seen people with cut abs, but their abs were twisted and non-symetrical.
Additionally, I've seen people with cut abs that actually push out like a ripped beer belly...
Then, of course, there are those people with perfectly symetrical, flat (almost concaved) abs....
What are your thoughts?
