And with no outside pressure on them, their blood would boil.

That is perhaps because everyone knows at least one person who can set the blood boiling.

"Nothing like a good game of football to get the blood boiling."

And then what happens - does your blood really boil?

Just reading the accounts got my blood boiling again, though.

His blood boiled at the idea of her in the Familiar's arms.

He felt certain they were laughing at him, and his blood boiled.

He had no time to think; the blood boiled in his brain.

His blood boiled at the thought of being tied to this woman.

My blood boiled within me when I heard his address tonight, and thought that he had left behind him three millions of such men.