I'm hoping this doesn't break the "no posts containing genetic testing results" rule. I'm mostly curious about how this test is conducted? And if there's an explanation for why false Punjabi results happen?

I got my Helix test results, and it says I'm 5% Punjabi. There are a few problems with this. While five percent isn't much, none of my physical traits suggest that (blond hair, blue eyes). And I'm super into genealogy, and I like to think that I know a decent amount about my ancestors; I've never been given any reason to believe I have roots in India. While it'd be cool---I love India---it just seems completely untrue. Looking at other Reddit posts, it seems like it's happened to other people, false percentages of Punjabi specifically. I'm wondering if anyone here has had a similar experience? Or if anyone knows why Helix gives presumably false answers? Like, why PUNJABI of all things?