It's a pretty strong message that the effect has not been proven. I was personally under the opposite assumption, having seen reporting on some of the earlier research.
> It's a pretty strong message that the effect has not been proven.
The message is that the effect has (may have) been proven since "showing breathwork was associated with lower levels of stress than control conditions".
The message is that the effect has (may have) been proven since "showing breathwork was associated with lower levels of stress than control conditions".