By Dr. Priyom Bose, Ph.D. Brazilian researchers reveal that even mild cases of COVID-19 can temporarily reduce heart rate ...

A person’s heart rate variability refers to the way in which their heart changes its rhythm with each beat. A higher number indicates resilience and longevity, while a lower number shows the body ...

They also found that metrics such as root mean square of successive differences (RMSSD), used for calculating heart rate variability, requires sampling rates greater than 64 Hz, the nominal ...