Damar Hamlin’s collapse underscores that even young, fit athletes can suffer sudden cardiac arrest. Experts explain what causes it

(Credit: Ian Johnson—Icon Sportswire/Getty Images)

Buffalo Bills safety Damar Hamlin remains in critical condition after going into cardiac arrest in the first quarter of Monday night’s football game against the Cincinnati Bengals. After undergoing CPR on the field, Hamlin was rushed to the hospital, and the game was suspended. 

“His heartbeat was restored on the field and he was transferred to the UC Medical Center for further testing and treatment. He is currently sedated and listed in critical condition,” the Bills tweeted around 2 a.m. this morning.