Comments on: Why Do We Yawn?

By: David Bradley

David Bradley — Sun, 28 Feb 2010 10:00:32 +0000

@Jesse You could ask the same question about any aspect of human curiosity. How far do you think we would have come if everyone had that lame attitude.

By: Jesse

Jesse — Sun, 28 Feb 2010 09:54:22 +0000

We yawn because that’s what we do why does it matter why we yawn

By: Joe K

Joe K — Thu, 25 Feb 2010 19:04:05 +0000

so there really is no medical reason for us yawning????????

By: David Bradley

David Bradley — Fri, 13 Feb 2009 18:09:10 +0000

There is no definitive answer to that question, I’m afraid, just various theories…

By: Courtney

Courtney — Fri, 13 Feb 2009 17:54:06 +0000

So, what makes it contagious?

By: David Bradley

David Bradley — Fri, 14 Nov 2008 19:04:51 +0000

Courney – add air pressure changes, oxygen/CO2 levels changing, air movements, temperature change, any other external stimulus that would affect everyone (and other mammals) in a shared environment…

By: Courney

Courney — Fri, 14 Nov 2008 17:28:55 +0000

Im trying to figure out how we could explan yawning is contagious [if it is.] But I cant do that if people dont even know why we yawn. My first step would have to be this, and people dont even have a straight answer. All I really have so far is that there are many scientists that have a lot of very different theories. In some which include, tired, drowsiness, or boredem.

By: jamie

jamie — Fri, 07 Nov 2008 22:24:30 +0000

hey guys there is a fact that you heart rate rises by 30% so maybe people yawn because their heart isn’t going fast enough for the activities they are about to do although this doesn’t answer the question if your bored but maybe people do it when they wake up for that reason.

By: Richard

Richard — Sun, 02 Nov 2008 23:03:46 +0000

Do animals besides mammals yawn? Do birds or iguanas yawn? I know my cat yawns.

By: Stephanie

Stephanie — Mon, 06 Oct 2008 19:49:47 +0000

I yawn every time I think about yawning…I yawned 6 times reading this article! :) .