I read your comment on praying mantises....well, today there was a guy at the pool swimming the front crawl. he was only breathing every 4 strokes, but when he decided to breathe, he exhaled through his nose! It was a loud snort sound, almost like a whistle. It made me think of a whale blowing out the blowhole. I have never seen a swimmer do this before.
I was wondering how he could exhale enough CO2 to inhale any oxygen since he only uses his nasal apparatus.
I read your comment on praying mantises....well, today there was a guy at the pool swimming the front crawl. he was only breathing every 4 strokes, but when he decided to breathe, he exhaled through his nose! It was a loud snort sound, almost like a whistle. It made me think of a whale blowing out the blowhole. I have never seen a swimmer do this before.
I was wondering how he could exhale enough CO2 to inhale any oxygen since he only uses his nasal apparatus.