Tried to figure it out in public and ended up looking like an absolute fool so imma need someone to explain this to me
In: Biology
When you do a “hoo”, the air is coming out from a very small opening which gives it a higher chance to mix with the air around it and cool down.
When you do a “haa”, the air is coming out at a larger volume and needs more time to cool down.
**Edit**
Put your finger right in front your mouth when doing a “hoo” and you will sense that it’s actually just as hot as a “haa”, but cools much faster a few cms away.
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