What Is Blood Pressure? Everything You Need to Know

Educational infographic explaining what blood pressure is, with a heart, digital blood pressure monitor showing 120/80 mmHg, and explanations of systolic and diastolic pressure, healthy ranges, and heart-health tips.

A nurse wraps a cuff around your arm, pumps it up, watches a dial, and announces two numbers — “120 over 80.” You nod as if you understand. But do you actually know what those numbers mean? What is it that’s being measured? Why does it matter? And why does everyone keep telling you to […]