#DUK
You breath warm air when you say "haaah" but cold when you say "whooh"
✅It's a simple physics when your blow hard through pursed lips the jet is moving a lot faster so it entrains more air, and there is less warm air there to start with, so most of what reaches your hand is colder room air. ... With pursed lips lots of cold air is entrained so the air reaching your hand is cold and moving quickly.
You breath warm air when you say "haaah" but cold when you say "whooh"
✅It's a simple physics when your blow hard through pursed lips the jet is moving a lot faster so it entrains more air, and there is less warm air there to start with, so most of what reaches your hand is colder room air. ... With pursed lips lots of cold air is entrained so the air reaching your hand is cold and moving quickly.