71 Interesting Facts About Human Heart By Editorial Staff Last updated on May 15th, 2022References: https://www.nationalgeographic.com/science/health-and-human-body/human-body/heart/ https://www.fi.edu/heart-engine-of-life http://www.math.niu.edu/~kong/360/014.pd https://www.heartmath.org/articles-of-the-heart/science-of-the-heart/the-energetic-heart-is-unfolding/ http://kidshealth.org/en/kids/heart.html# http://www.innerbody.com/image/card01.html http://www.texasheart.org/HIC/Anatomy/anatomy2.cfm