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

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

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What are some tips to get nice abs? - Quora

Is it normal for your lower abs to be flatter, and not as visible

What does the rib cage do? - Quora

What's the best way to develop a six pack in 100 days? - Quora