Turns out it's not just fatigue that makes you yawn, but our sense of empathy. Thus, when I yawn when my dog yawns, it means: "I hear you, Jess. I feel your pain. I want a nap too."
I challenge you NOT to yawn when watching this video.
Yawning time is over! What's a good cure...oh, I know: http://youtu.be/c7qboe3-ofk
Hopefully that makes you want to go buy the book. If you are still yawning, I cured myself with dark chocolate.
Leave me a message and tell me if you're yawning now.