Dr. Andy Galpin

And you're consistently seeing an elevation of heart rate.

One day difference in HRV could be nothing.

It could be completely irrelevant to what you're doing.

But that doesn't mean necessarily that it's a bad marker.

When you're using it appropriately, there's a ton of information we can glean out of that.

Specifically, again, where we find most of the value is even things like biofeedback training.

We can develop more resilience within your nervous system, and you can objectively see that.

And so we can use a whole bunch of different tools where we can give people, and we can say things like, okay, can you calm yourself down?

Can you?

Oh, yes, I can.

Great.

Well, then show me in your physiology.

And you can see them looking at HRV data and going, oh, it's not moving.

Oh, great, this is why we want you to go do A, B, and C, or a bunch of different ways you can do it.

So that's a lot of value in HRV independent of just my single one ultimate recovery marker.

In my opinion, respiratory rate is even better.

When you see changes in respiratory rate, this will happen way before changes in resting heart rate, and this itself will influence both resting heart rate and HRV.

If you start breathing more, something is happening.

There's actually a really interesting paper.

Laura Bloomfield did a couple of papers where she measured all these things, resting heart rate, sleep, HRV, and looked at stress.