People yawn because they are bore.....right now,their is no approved causal of yawnimg
When I am sleepy or tired I yawn.
because your tired
You do not yawn when you are relaxed because scientists have proven that when you yawn, you either need sleep or it is because you are tired.
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...
yes when you are tired and your body is trying to stay awake it yawns
When I am sleepy or tired I yawn.
Yes when they are sleepy and tired
because your tired
because stomach aches usually make you tired by the pain so when your tired you usually yawn! does that helP?
You do not yawn when you are relaxed because scientists have proven that when you yawn, you either need sleep or it is because you are tired.
because we feel tired
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...
A yawn is normally a response to a change in activity, although if you did not get enough sleep, you could become tired and yawn.
yes when you are tired and your body is trying to stay awake it yawns
Same as humans because there tired
no it means you have rectal disfunction
Insects do not yawn. People necessarily do not yawn only when they are tired. Most people, after reading this, will yawn.