Been playing around with intermittent fasting & basic gut health stuff the past 18 months. Pretty interesting to vibe off of all of that. Done some 36-48 hour fasts with sense-popping results (am a wuss now doing 2-3 ~18 hour/week). Some interesting research/postulating in those areas going on. (insulin, serotonin levels, cancer cells, etc.)
Apparently if you're an old man ***** with a gluten sensitivity & you stop drinking beer/eating gluten, you can breath through your nose and feel a lot better. But who wants to do that with any regularity.