Your heart rate keeps fluctuating depending on what you are doing. However, a heart rate that is too high or too low than the normal range can be a cause of concern.
Heart health notifications on your Apple Watch - Apple Support
HRV 9 cause for concern : r/fitbit
What Is a Dangerous Heart Rate?, gif maker online heart
What is a normal pulse rate? - BHF
Get to Know Your Heart Rate: It Might Save Your Life
What Is a Dangerous Heart Rate?, gif maker online heart
When to Worry About a Low Heart Rate - Kelsey-Seybold Clinic
How Alcohol Can Affect Your Heart Rate - The New York Times
Tachycardia: Symptoms, Causes & Treatment
A review article of the cardiovascular sequalae in esport athletes: A cause for concern? - ScienceDirect
What Is a Dangerous Heart Rate?, gif maker online heart
How to calculate heart rate from ECG (or EKG) - Seer Medical
Should I worry about my fast pulse? - Harvard Health