“The emerging scenario strongly suggests that the effects of SNB [slow nasal breathing], beyond the relative contribution of vagal stimulation, are mainly ascribable to olfactory epithelium stimulation.””
P.S. Let that sink in…pretty neat. This is just a little teaser for the paper I’m reading now (not quite finished) and will be releasing a 411 on this coming Friday. The article is challenging to read, but it may significantly contribute to our understanding of why slow breathing is so beneficial…we’ll see once I get through it all…