Can someone explain to me why and how we yawn. I just want to know the process or what's going on in our body when that happens.
little air going to our brain and we yawn, something like that. we yawn so we can get air into our brains so they can work again, something like that. lol.
muscle spasm i think lol
Your brain lacks oxygen. That's why you yawn. It's the body's way of replenishing it.