What’s the secret to abs??

A calorie deficit long enough that gets you lean enough to see them

First off, being lean Then, having bigger abs makes them easier to see. So train them like you would other muscles. And thats the end of the list

dehydration and starving yourself, basically. And posing in the right way for pics

dehydration

Covering them in a belly of flab, so I don't have to pretend that I have them