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
Kirsteen	-	Scottish
Mara (1)	MAHR-ə (English), MAR-ə (English)	Biblical
Liwia	-	Polish
Ash	[æʃ]
Gus (1)	GUS	English, Scottish
Emery	EM-ə-ree	English