Running watch that tracks breathing as well as HR?

[InfinitySeven]

I'm looking at starting running.

I have a tendency to hold my breath when I run. This isn't ideal, as you can imagine!

I've got a Garmin at the moment, which does all the usual tracking including heart rate, but it's getting on a bit.

Does anyone know if it's possible to get one that tracks breathing too?

?Afaik you'd need some sort of laboratory set up to measure breathing, sports watches currently (to my knowledge) have no way of knowing what your lungs are doing ?
may well happen at some point thoug as the technology becomes more sophisticated