J,

do a lit search in Medline/PubMed for “nasal ultradian rhythm” and see what comes up.

What this whole threead points to is the attempt to translate a fairly pure science finding (“great… the nasal ultradian rhythm is 45 minutes a side for a total of 90, give or take error variance”), some correlational research (“when the nasal rhythm is dominant in one nostril, there is appears to be greater EEG integration in the opposite hemisphere”), and translate it into some useful applied practice (“here I am in my cubicle, it’s 10 am and I need a smoke/coffee/etc, but I would rather harness the natural power of my body and mind, so what can I do?”)

Whenever there’s this many steps between the ‘pure’ finding and the ‘applied practice’ there’s bound to be hits and misses.

Paul