While I absolutely believe that breathing techniques can be beneficial for ADHD (I’ve got it, and our almost-7 y/o daughter does, too), the mechanism posited he

While I absolutely believe that breathing techniques can be beneficial for ADHD (I’ve got it, and our almost-7 y/o daughter does, too), the mechanism posited here seems… questionable. One region of the brain getting more oxygen? If that were the explanation, surely other regions of the brain would be performing poorly due to insufficient oxygen as well. And further, taking oxygen might be expected to yield improvements. Is any of that the case?