Technically, the term is Alcohol Flush Syndrome, but if you're Asian you might have referred to it as Asian Glow or Asian Flush.
You get the glow because of a gene, but not all Asians experience it.
But what about other races?
Asian Glow is caused by a deficient enzyme that isn't able to metabolize alcohol correctly.

Basically, Asian Glow is caused by a mutated gene that might have been advantageous at some point in history.
Some Asians get it and others don't.
