Bryn Bowles had the day off from her job as a critical-care nurse in Anchorage, Alaska, when the then-26-year-old decided to go for a run. Partway through the jog, she collapsed.

A bystander called 911 and Bowles was rushed to the hospital. One of the first things Bowles remembers is trying to ask “what happened?” in the hospital, but having only the sound “you-you-you” come out. “The whole time, in my head I can see it, but when I talk, I can’t say it,” Bowles told Insider.