Doctors in Henan, China, were shocked by the case of a middle-aged man who suffered a pneumothorax after mild physical exercise – 20 pushups and a few minutes of skipping rope.

The unnamed man told physicians that he had decided to get in shape as part of a New Year’s resolution, but things didn’t really play out like he imagined. Last month, he started doing pushups and skipping rope as a way of losing weight, but he only managed to do two sets of pushups and skip ropes for a few minutes when he started feeling bad. He stopped and went about his day, but when he woke up the next day, he started experiencing severe chest pain and difficulty breathing, especially after minimal physical effort, like climbing stairs. At one point, the pain got so bad that he went to the hospital where doctors diagnosed him with pneumothorax.