I don't think it's pseudoscience, it's difficult to do RCTs with this but breathing techniques are definitely reproducible and falsifiable. Furthermore, if it

I don't think it's pseudoscience, it's difficult to do RCTs with this but breathing techniques are definitely reproducible and falsifiable. Furthermore, if it is, it doesn't have to be a bad thing. If it's pseudoscientific and not effective, it can still help through no/placebo. It's not like box breathing is going to damage you (or others) if it doesn't do anything (it doesn't do much for me).