Carley is a writer, editor and social media professional. Before starting at Forbes Health, she wrote for Sleepopolis and interned at PBS and Nickelodeon. She's a certified sleep science coach and ...
Verywell Health on MSN
What are heart sounds and how to know if they’re normal
S1 and S2 are the normal heart sounds you hear when the heart valves close. Heart murmurs are extra sounds that can be heard during systole, diastole, or as a continuous sound. S3 and S4 are abnormal ...
Average heart rates vary widely. During stress, the body releases hormones that trigger a “fight or flight” response. A person’s heart rate may increase and exceed 100 beats per minute (bpm).
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