I was given "only nasal" as an endurance tip as a child and always understood that simply as a helpful intensity limit guide: if you stick to "noseable" level y

I was given "only nasal" as an endurance tip as a child and always understood that simply as a helpful intensity limit guide: if you stick to "noseable" level you won't find yourself completely exhausted any time soon. It may lack sophistication but it's surely helpful for people who haven't yet learned how to spread out their endurance. But whenever something works in the realm of athletic performance, there'll be a flock of people who make up the wildest theories to explain how it works and misapply it to situations where it's actually completely wrong. So I totally get that "woo-wooh"