Hey dudes, I'm getting good results with my abs, but I was wondering, I couldn't help but notice that some bodybuilders have this 'line' through the middle (a vertical line) of their abs.. a strong and well defined line, like .. a river ? going down, towards the navel.. Is there a way to practice the abs to define that line ? Right now I can see that with me too, but by far not well defined ...
Just wondering
Thanks again !