flesh and blood
flesh and blood {n.}
1. A close relative (as a father, daughter, brother); close relatives. Used in the phrase "one's own flesh and blood".
Such an answer from her — and she's my own flesh and blood, too!
2. The appearance of being real or alive.
The author doesn't give his characters any flesh and blood.
3. The human body.
Before child labor laws, small children often worked 50 or 60 hours a week in factories. It was more than flesh and blood could bear.
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Source: A Dictionary of American Idioms