why do a human yaun ? what is the reason for it ?
Answers
Answered by
1
the scientific reason is that when blood supply becomes less the jaw muscles strech, and increse the blood flow towards the head.
The deep intake of breath during a yawn forces downward flow of spinal fluid and blood from the brain.
Cool air breathed into the mouth cools these fluids.
The deep intake of breath during a yawn forces downward flow of spinal fluid and blood from the brain.
Cool air breathed into the mouth cools these fluids.
Answered by
0
When we are tired our lungs don't work properly, so our body receives less oxygen. Then the brain sends signals to yawn or to widely open mouth.
Anonymous:
plz mark mine as best n click thnk u
Similar questions