this happen you a person is tired or
has a luck of oxygen in there body
A yawn is a release of build up carbon dioxide perhaps a sigh is the same. Or perhaps relaxing ofthe diaphragm.
Your dog may just do this as a yawn or a contented sigh as he is tired. Not all dogs do this and so its merely a trait of his.
We yawn because We yawn because we need to get rid of CO2, so that would mean if you don't yawn you will eventually die from hypercapnia (too much CO2)!
we yawns o much because of lack of oxygen in our bodies. If you are sititng in class for example, and you yawn, its not becasue you are tired, it is becasue you donthave much oxygen in your body . :)
Honestly, I'm not sure but I think it's for the same reasons we do, I'm not sure, so don't blame me if I'm wrong...I hope I help :)Emrox123
they yawn because when you yawn it passes on to other people . so you yawn then someone's right next to you then i think they inhale then they start to yawn ?
because your mind is not concentrated so you yawn to show you to go to bed
because your mind is not concentrated so you yawn to show you to go to bed
Family Feud 1) Yawn 2) Fall Asleep 3) Sigh 4) Go home 5) Look at watch 6) Not Talk
yawns are contagious becuase when we see another person yawn our brain sees it as that person is gasping for air and they dont have enough oxygen so as a defense mechenisme we will yawn also.
lack of oxygen to the brain makes you yawn. so when you have a headache and you yawn it increases the oxygen flow temporarily relieving your haedache
Look these up on youtube or something: 1. Yawn Yawn Yawn Les Savy 2. Birthday Sex 3. You look so much better when your naked 4. Orgy dreams in digital 5. We didn't start the fire 6. Make you drip