Before you begin taking readings in work sessions and meetings you have to become familiar with the pattern and connection between your circumstances, Heart Rate Variability (HRV), and breath. Your breath rate signals to your nervous system whether your circumstance calls for an accelerated state, or a relaxed nervous state. Conducting repeated sessions will allow you to see the relationship.
Exercise: Using basic kit take a measurement each morning for five minutes. While doing so, breathe six times a minute. That means breath in five seconds and out for five seconds. You can start with a smaller period if you are uncomfortable and need to practice. Even at smaller intervals make the breaths even and consistent. Afterward look at the intervals between heart beats to see how well your breath and HRV relate to each other.
If you are relaxed the measure of RR intervals will go up and down evenly with your breath. This means your Parasympathetic Nervous System (PNS) is applying the brake to put you in rest and digest state. Here is a graph of my RR intervals during a five minute session in a completely relaxed state:
I have had many sessions where despite regular breathing I could not enter a relaxed state. Here is a session where I was thoughtful about a variety of to do’s while trying to bring myself to a relaxed state. These Upsets were evident in the graph of my RR intervals:
You can see in the intervals have periods where there is not much variability. My thought process was accelerating my Sympathetic Nervous System even though I was sitting quietly breathing in a regular rhythm. In another session I was generally relaxed and in the zone then had a thought that interrupted my flow. I let the through go and returned to breathing and recaptured my variability. You can see the interruption and return in the red circle.
In another session on two occasions I had Upsets in the flow of the session and was able to recover twice. You can see these episodes in the red circles in this chart.
The exercise of breathing regularly and taking your HRV measurement for five minutes a day will give you a baseline for when your system is Upset by different thoughts, and when it is responding to your breath while relaxed.
If you want to learn more about developing a Superpower read about Giving a Speech.