Surah Yaseen-The Quran's Heart

This surah is ‘Makki' and it has 84 verses. It is commonly known that Surah Yaseen is the "Heart" of the Quran. Why is it known as the heart of the Quran? In our bodies, the heart is considered to be the most organ. It supplies the entire body with blood to keep us functioning. Without the heart, the body cannot live.