Heart beat sounds

A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.

Heartbeat sound for beginners:

https://www.youtube.com/watch?v=zNHI-l_c-ls

https://www.youtube.com/watch?v=iTfxS7hjLrM