![A normal resting heart rate can range anywhere from 40 to 100 beats per minute. Description from ei… | Heart rate chart, Resting heart rate chart, Normal heart rate A normal resting heart rate can range anywhere from 40 to 100 beats per minute. Description from ei… | Heart rate chart, Resting heart rate chart, Normal heart rate](https://i.pinimg.com/originals/ca/e2/ca/cae2ca924a052bb40738facd53b254c5.jpg)
A normal resting heart rate can range anywhere from 40 to 100 beats per minute. Description from ei… | Heart rate chart, Resting heart rate chart, Normal heart rate
![Had a very fast heart rate (up to 120 bpm) during my sleep last night. Should I be concerned? : r/AppleWatch Had a very fast heart rate (up to 120 bpm) during my sleep last night. Should I be concerned? : r/AppleWatch](https://i.redd.it/qx456efpskg01.jpg)
Had a very fast heart rate (up to 120 bpm) during my sleep last night. Should I be concerned? : r/AppleWatch
![Twelve-lead ECG shows narrow QRS tachycardia with a heart rate of 120... | Download Scientific Diagram Twelve-lead ECG shows narrow QRS tachycardia with a heart rate of 120... | Download Scientific Diagram](https://www.researchgate.net/publication/272197591/figure/fig7/AS:295103861149698@1447369651410/Twelve-lead-ECG-shows-narrow-QRS-tachycardia-with-a-heart-rate-of-120-beats-per-minute.png)