It's where the heart is

CHEST

Think of the part of your body that protects vital organs like the lungs and is often tapped during a medical exam.

The phrase "It's where the heart is" is a play on the common saying "Home is where the heart is," but here it’s taken literally. Instead of referring to home, the clue points to the physical location of the heart in the human body—the chest. The answer is straightforward once you recognize the shift from figurative to literal meaning.