Doctors say a 26-year-old man most likely collapsed his lung during a big morning yawn in Wuhan, Hubei Province because of his tall, thin physique.
The man surnamed Ou sought treatment at the Central Hospital of Wuhan after he stretched and yawned so hard before work that he ripped a hole in his lung.
Ou paid little mind to the sudden pain at first, but sought medical attention when the pain intensified so much that he couldn't breathe.
Doctors discovered Ou had suffered from spontaneous pneumothorax, or when a small air pocket in the lung breaks and leaks air into the cavity surrounding the lung.
Chen Baojun, director of cardiothoracic surgery at the hospital, explained that while there are many causes for pneumothorax, tall and thin men between 18 and 30 years of age are known to be susceptible. Ou is 1.8 meters tall and only weighs 60 kilograms.
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