why do we yawn when we see someone yawning ?

Answer 1

because we're reminded to yawn... (this is why they say it's contagious)
yawning is an exercise in our lungs...

Answer 2

Scientists (and everybody else) have known for decades that yawns are contagious, but they've never known why. Some think it's an unconscious mirror effect - someone yawns, you yawn in response almost like a reflex.

But the scientist Platek says he thinks it has to do with empathy. The way he sees it, the more empathetic you are, the more likely it is that you'll identify with a yawner and experience a yawn yourself.

In a recent study, Platek looked at contagious yawning in people with "high empathy," "low empathy" and everything in between. He found that higher empathy meant more yawn-susceptible and lower empathy meant more yawn-immune.

Answer 3

We don't yawn because we see someone yawning, but seeing someone else makes you feel like it, especially if you're fatigued

Answer 4

I think it is the power of suggestion and the unconscious need to relax our inner ear. Sometimes people only need to say the word "yawn" and I'll need to do it badly...to suppress it makes my eyes water.

I hope someone knows a scientific reason for it...not I though.

Answer 5

I'm not too sure but i just yawned when i read that ha ha figure that out!

Answer 6

is a proven fact that yawns are contagest

Answer 7

Because yawns are contagious and infectious.

Answer 8

It's caused by a stimulation of the nerves in your inner ear. Reflex.

Answer 9

Imitation is the greatest form of flattery

Answer 10

Lack of oxygen.