Stir somebody's/the blood Verb + object/complement
If something makes you extremely excited, enthusiastic or determined, it stirs your blood.
John's speech on plastic pollution at Marie Curie high school has stirred everyone's blood and raised their awareness of environmental issues.
Her new album has stirred music lovers' blood these days.
Before the race started, Timmy dared me to break his record of running 100 meters. This just really stirred my blood.
Children or adults often say this phrase to get their friends to join in something, especially to jump into a swimming pool (pond, lake, etc.)
Act with more effort or enthusiasm
The excitement and danger caused by taking part in activities, especially sports or entertainments
The verb "stir" should be conjugated according to its tense.
The idea of the idiom may come from the fact that when you are excited, your heart beats faster and makes your blood pressure increase.
Go to bed
I feel so sleepy, so I want to hit the hay.