Why do people sport 4-, 6- or even 8-pack abs?

The number of washboard abs you can show is determined by your DNA, according to research.

Why You Have 4 Pack Abs vs 6 Pack vs 8 Pack - SET FOR SET

8 Pack Abs vs 6 Pack Abs 8 Pack Abs Test - ATHLEAN-X

4 Pack Abs vs 6,8,10 Pack: Men & Women Genetics, Body Fat Percentage

Forget The 6-Pack! 11 Line Ab Workouts For A Strong Core, 41% OFF

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4 Pack vs 6 Pack vs 8 Pack Abs Explained - Steel Supplements

4 Pack vs 6 Pack vs 8 Pack Abs Explained (with Pictures)

Abs Explained: 10 Pack Abs, Is It A Myth? - SET FOR SET

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8 Pack Abs vs 6 Pack Abs 8 Pack Abs Test - ATHLEAN-X

Six-pack vs Eight-pack abs: Science behind Abs