Your heartbeat is more than just a rhythm—it's a carefully orchestrated process that keeps you alive. Every beat starts with an electrical signal that travels through your heart, causing it to contract and pump blood throughout your body. - Here’s how 🧪: This electrical impulse begins with an electrical signal in a special part of the heart known as the SA node, which is like the heart’s natural pacemaker. This signal moves through the upper chambers of the heart, making them squeeze and push b