Man’s Lung Collapsed From Yawn

We knew that yawns were contagious, but dangerous?

Be warned, you may yawn throughout this story.

A man in China woke up and yawned just like most of us do, the only problem is he felt a pain in his chest. He went about his day and headed to work.

After being in pain most of the day, his friends took him to the doctor where they discovered that his pain was because of a collapsed lung. He yawned with such force in the morning that it caused a spontaneous pneumothorax.

This is apparently a common thing among tall, thin men and smokers.

[SOURCE]