The science of breathing

Heart rate variability is integral to the science of breathing. As we breathe in, our heart rate accelerates. As we breathe out, it decelerates. That produces the variations in the interbeat interval that we call heart rate variability. Breathing is almost unique among the bodily functions. It can be voluntary or involuntary with each controlled… Continue reading The science of breathing

Alcohol and HRV

The effect of alcohol can be clearly seen in the HRV metrics after a heavy night of drinking. The impact is astonishing. Although the RMSSD numbers drop dramatically, they do bounce back after a couple of days. That may give the impression that avoiding heavy drinking is the solution, and that moderate consumption is fine.… Continue reading Alcohol and HRV