If I can feel my rib cage, does it mean I have underdeveloped abs

Why do the rib cage of guys with six pack abs not visible even when they are having very low body fat percentage? - Quora

Why do the rib cage of guys with six pack abs not visible even when they are having very low body fat percentage? - Quora

Rib Flare: Why it Sucks and Why You Should Care

When you have a six pack should you be able to see the bottom of

Why does my stomach have a popping feeling under my right rib

Is that abs or is that just my rib cage? : r/fit

Is it unhealthy that you can see my ribcage? - Quora

Why People Get Uneven Abs (And What to Do About It) - Steel Supplements

This exercise is great if your rib cage is wider than 90 degrees. If i, external obliques workout

I have low body fat percentage and my ribs are starting to show