Is it possible to exhale and inhale at the same time?

You puff out your cheeks and then let the air slowly escape from your mouth while inhaling through your nose.

https://en.wikipedia.org/wiki/Circular_breathing

I do something very similar on my longer runs. Take a big gulp of air in, hold it as long as possible, then very gently exhale but only a little.
Inhale a big breath again & repeat the whole thing up to 3 times.

It works too, the long run is made so much more easy & comfortable.

@Lightlyseared -I am trying this right now and only passed out twice!XD
@JeSuisRickSpringfield -Thank you for the link!
@ucme What happens if you go to four times?

@lucillelucillelucille I would either pass out or speak with a squeak.
Three is neat & tidy, always do things in 3’s…free tip.

@ucne Thanks for the tip but where are the other two?

ucne? :D

@ucme- It’s in disguise.

Do they just call that a “hale”?

@Demosthenes -I call it impossible! I can’t do it.
Can you?

I played the trumpet from 4th grade through 4 years of college and never breathed like that.

@gondwanalon -I tried and can’t.