7. Heart Rate Variability
This is fascinating stuff right here. If your heart is beating 60 times per minute, let’s say, then it’s not just one beat per second. A healthy heart rate will show variability, this is just how it works.
Let’s pull back a bit, and think about our nervous system. So we have this “fight or flight” response built into our system, but we also have the “feed and breed” part of our nervous system.
One is on edge, and one is relaxed, to put it simply. One is like a gas pedal on your heart rate, and the other is like the brakes.
When these two systems are in good balance, they are constantly doing a gentle ebb and flow between the two.
What this means is that your heart rate of 60 beats per minute might be: 1.1 seconds, followed by 0.9 seconds, and so forth. This is just a gentle ebb and flow, and is how your heart works.
If these two nervous systems are not well-balanced, though, they prevent your body from going into the parasynthetic repair mode13.
This means that if there is an exaggerated stress response, which leads to a state of impaired heart rate variability.