I'm a guy and I'm about 5' 8" and currently at 135lbs. I used to be 150, but as I started to go to the gym, I decided to shed some pounds through dieting and whatnot so that I could have more visible abs and get rid of the lower stomach fat. Well, I'm now 135lbs, which is too light for me (140~ is lowest I want), and I have seen almost no improvement in the visibility of my abs. I can feel that they're stronger because of all the gyming but I still can't hardly see them any better than when I was 150. I really don't feel like dropping down to like 120 or something so I was wondering how I could have my abs become more visible, without losing more weight, and ideally going back up to 140ish at the same time. Any exercises, routines, or suggestions are greatly appreciated!