Von Miller is opening up about his experience battling coronavirus.

The 31-year-old Denver Broncos linebacker detailed the “frightening” symptoms he suffered from last month during his battle, saying that his illness started with a cough which lead to him “not being able to breathe.”

Von tested positive for COVID-19 back in early April. Von said that his symptoms got even worse, given his history with asthma.

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Flip the page to read the details of Von’s experience: