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Heart rate variability (HRV) refers to the beat-to-beat alterations in heart rate or pulse.

The heart has its own nervous system through which the brain and heart communicate and influence each other in a synchronized fashion.

Understanding the Autonomic Nervous System (ANS) The sympathetic branch of my nervous system was activated sending signals to my body to get ready for battle. I could feel my heart rate increase and anxiety creep in. Not to mention, the state of the world in general. Last Sunday, I started thinking about the week ahead and the uncertainty around my routines and my family’s routines–all of which I could no longer control. The more connected we are to the nuanced perturbations of our body the better positioned we will be to interpret and leverage these moments to our advantage. Anxiety can be subtle, appear out of nowhere and accumulate in ways that are difficult to perceive. The problem is “the battle” isn’t always obvious.

One thing we can all do to make the most of anxiety and stress is to try to identify the source of the anxiety and turn it into positive energy. At WHOOP, we talk a lot about how physical exertion impacts our heart rate variability (HRV) and recovery but it is important to note that emotional and psychological stress can also play a significant role in mediating HRV (Chalmers et al., 2014).

These are anxious times we’re living in right now.