Heart Rate Variability (HRV) is one of those sleep tracker metrics that doesn't often step into the limelight, but understanding what it means and how to improve yours is crucial for getting a better quality of sleep, and for sleeping through the night.
I recently spoke to endocrinologist and geneticist Fady Hannah-Shmouni MD FRCPC, Anna Elitzur, a mental health expert at Welltory, plus sleep and recovery specialist Anna West, to get a clear definition of HRV and its relationship with sleep.
