How can I build the size of my abs in order to see them?
If you want your abs to really show, you need to develop them just like any other muscle. And the best way to develop any muscle is to use resistance and train within a rep range, between 8-16 reps. High resistance ab exercises such as Active Planks, Roman Chair Sit-ups (slow and focused on lumber extension & flexion, Hanging Leg Raises (focus on pelvic tilt at the bottom), Physio-ball Crunches (focus on full range). Form is crucial and full range of motion.
FYI - Abs or (Rectus Abdominus) insertion attachment is at ribs 5th, 6th, 7th and Xiphoid Process and origin attachment point is Pubic Crest. #healthyfit