Dr. Andy Galpin

It's not standardized and there's just a lot more context we have time to get into right now.

So unfortunately, we're gonna have to take a little bit of a pass on that.

Respiratory rate is actually quite simple.

You probably wanna focus at least initially on respiratory rate overnight rather than during the day, but both are acceptable as well.

And again, probably already coming in any of the technologies that you may be using to track your sleep, recovery or performance or anything else.

So I'd like to focus most of our attention here on the cardiovascular stuff that we spent most of our time in our conversation with and get into some of those details right now.

The gold standard to measure your VO2 max is going to be in a laboratory with a metabolic cart.

You can get this stuff in various equations.

You can use any of your fitness technologies.

I will strongly encourage you though, that if you care about this number, if it's possible, and it may not be,

Spend a couple of hundred dollars and get this actually tested in a laboratory.

The data are quite clear at this point.

I have not yet seen really any standard over-the-counter fitness technology that gets an accurate number of your VO2 max when the number gets high, and particularly for people who are already fairly fit.

If your VO2 max is really low, it might give you a decent number.

But for folks that are kind of moderate to highly trained, it's just really challenging to get an appropriate estimate from a watch or a ring that

or things like that.

Perhaps those will improve in the future.

In fact, I quite expect them to.

But as of now, the margin of error is a little bit too high for me to be comfortable with when you care about accuracy.

If you're trying to just get a global sense, they're fine.