Heart sounds are the noises made as blood moves through the heart with each heartbeat. When the heart valves close, they make a distinct lubb-dupp sound. Healthcare providers listen to the heart's ...
A normal heart rate is between 60 to 100 beats per minute (BPM), but it can vary by person. A heart rate slower than 60 BPM can be a sign of anything from a high fitness level to hypothyroidism.