Same thing as when you yawn.....
When you get tired you get a shortness of breath causing you to yawn...you yawn to catch your breath when your tired...
1 yawn means you are tired. 2 yawns means you need a nap. 3 yawns means you need to go to sleep.
Actually that is a lie. Yawns are contagious.
Yawns can be classified into several types, including physiological yawns, which help increase oxygen intake and regulate brain temperature; contagious yawns, triggered by seeing or hearing someone else yawn; and social yawns, which may occur in response to social cues or empathy. Additionally, there are reflexive yawns that can occur due to boredom or fatigue. Each type serves different functions, ranging from biological needs to social bonding.
I don't know about "drowsy" but I have heard that if someone near you yawns, you yawn too. Like yawns are contagious. Yawns don't mean that you're tired. It also means that you're not getting enough oxygen, but that has not been scientifically tested.
"He Who Yawns" was the actual name of Geronimo (Goyahkla), leader of the Apache band in Arizona.
A dog is like a human , it yawns when it is tired or about to go to sleep! :D It also yawns as a sign of disapproval, or when it is stressed, and needs to calm itself down.
I smell a troll.
1 yawn means you are tired. 2 yawns means you need a nap. 3 yawns means you need to go to sleep.
boring
Actually that is a lie. Yawns are contagious.
No.
yes, yawns are contagious and you can go to science.howstuffworks.com/life/contagious-yawn.htm
I don't know about "drowsy" but I have heard that if someone near you yawns, you yawn too. Like yawns are contagious. Yawns don't mean that you're tired. It also means that you're not getting enough oxygen, but that has not been scientifically tested.
When a hippo yawns, it signals that he is about to charge or fight. Definitely run.
They are bored and need some more exciting drugs. Try LSD
29
"He Who Yawns" was the actual name of Geronimo (Goyahkla), leader of the Apache band in Arizona.