The correct way to recommend to the scientifically inclined to learn about breathwork “without the woo woo” is to point to a meta analysis. The first one I found suggests that yeah, breathwork can lead to lower stress but that most studies feel biased and can overhype most other benefits.

https://www.researchgate.net/publication/366645304_Effect_of...

To me, breathwork falls under that category of positive exercises that can give a boost in life. I would never overhype “the power of breathwork” to anyone. Just like going to the gym, yoga, dancing, and most other similar activities.