in one's blood
Also, in the blood. Part of one's essential nature. For example, The whole family loves music; it's in their blood, or Sailing somehow gets in your blood. Also see run in the blood.
“In Case Of” vs. “In The Event Of”: Which One Is Correct?Do you break the glass in case of emergency or in the event of emergency? The phrases in case of and in the event of are both prepositions.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.