What is a good heart rate variability

Heart Rate Variability (HRV) is a measure of the variation in time between consecutive heartbeats. High HRV is generally considered a positive biomarker, reflective of a body's adaptability and resilience to stress. Good HRV indicates that the body is well-recovered, suggesting parasympathetic dominance (a state of rest and digestion) rather than being stressed or overly taxed 1.

Andrew Huberman speaks about the importance of maintaining a healthy HRV to avoid continuous high or low heart rates, which are linked to chronic stress and potential heart health issues. He emphasizes that a regular heart rate which isn't excessively low or high is typically healthy, and that HRV can act as an indicator of this balance 2.

It's important to remember that while HRV is a valuable health marker, the actual "good" values can vary significantly between individuals, and comparisons should not be simplistic or taken out of context from wearable devices or other measurements without understanding what is specifically being measured and how. Each person's optimal HRV can differ, influenced by individual health factors and lifestyle 1.