A "heartbeat" is the rhythmic sound made by the heart as it pumps blood throughout the body. Each heartbeat is a sign that the heart is working to supply oxygen and nutrients to vital organs. The average human heart beats about 60 to 100 times per minute, depending on factors like activity level and emotional state. When we listen to a heartbeat, we can often hear a "thump-thump" sound, which is caused by the closing of heart valves. This sound can be detected using a stethoscope, a tool commonly used by doctors to monitor heart health. A strong and regular heartbeat is usually a sign of good health.