7 incredible heart facts you haven’t heard before
Did you know your heart beats about 100,000 times a day? And that's just the start.
Feb, 2026
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The heart is like a Timex watch: It takes a beating and keeps on ticking. It’s the human body’s workhorse, always on and playing a vital role in keeping you alive. The way the heart works is easy to grasp—it’s a pump, drawing blood in and sending it out.
But that’s the super simplified version of how the heart functions. Here are seven amazing facts about the heart that will blow you away.
Written byPatrick Sullivan.
Medically reviewed byMegan Burke, MD.
Sources: Centers for Disease Control and Prevention. Life Expectancy. January 9 + 13
- Centers for Disease Control and Prevention. Life Expectancy. January 9, 2026.
- British Heart Foundation. How a Healthy Heart Works. November 1, 2024.
- American Society of Hematology. Blood Basics. Accessed February 17, 2026.
- National Heart, Lung, and Blood Institute. How the Heart Works: The Heart. March 24, 2022.
- Johns Hopkins Medicine. Anatomy and Function of the Heart’s Electrical System. Accessed February 17, 2026.
- Cleveland Clinic. Blood Vessels. February 12, 2025.
- NASA. How Far Away Is the Moon. July 23, 2021.
- National Heart, Lung, and Blood Institute. How Blood Flows through the Heart. June 25, 2025.
- Cleveland Clinic. Blood Flow Through the Heart. November 8, 2023.
- National Heart, Lung, and Blood Institute. What the Heart Looks Like. March 24, 2022.
- Johns Hopkins Medicine. Dextrocardia. Accessed February 17, 2026.
- Cleveland Clinic. Cardiac Tumor. April 29, 2022.
- Merck Manual Consumer Version. Overview of Heart Tumors. June 2024.
- Rog-Zielinska EA, Norris RA, et al. The Living Scar–Cardiac Fibroblasts and the Injured Heart. Trends Mol Med. 2016 Feb;22(2):99-114.
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