be in (one's) blood

To be innate, as of a skill or quality. All of my relatives are doctors—medical prowess is just in our blood.

Name	Pronounced	Usage
Seong-Hun	sung-hoon	Korean
BjÖRn	BYUURN (Swedish, German), PYUURN (Icelandic)	Swedish, Icelandic, German, Ancient Scandinavian
Haneul	-	Korean
PÁLa	POW-lah	Icelandic
Pedro	PE-dro (Spanish)	Spanish, Portuguese
Gadar	-	Armenian