As per the theory of yawning, when the person gets tired or bored, the amount of carbon di oxide in the body of person increases and oxygen level decreases. This leads to low blood flow to the heart and brain, so to increase the oxygen level the person yawns. In the process of yawning more amount of carbon di oxide goes out of the body and the body can take more amount of oxygen
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...
When I am sleepy or tired I yawn.
your tired
because your tired
Actually, you do not yawn when your tired Specifically. When you yawn, your releasing Carbon Dioxide from your body to keep you alert and awake.
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...
When I am sleepy or tired I yawn.
your tired
this happen you a person is tired orhas a luck of oxygen in there body
Yes when they are sleepy and tired
because your tired
Actually, you do not yawn when your tired Specifically. When you yawn, your releasing Carbon Dioxide from your body to keep you alert and awake.
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
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