Emilia Clarke, best known for portraying Daenerys Targaryen, survived two rounds of brain surgeries while filming the early seasons of Game of Thrones.
Clarke revealed this information in a personal essay published by The New Yorker, where she described the events that could have ended her life. After filming of the first season of Game of Thrones, Clarke was exercising at a gym when she suddenly became ill.
“I reached the toilet, sank to my knees, and proceeded to be violently, voluminously ill,” said Clarke. “Meanwhile, the pain—shooting, stabbing, constricting pain—was getting worse. At some level, I knew what was happening: my brain was damaged… To keep my memory alive, I tried to recall, among other things, some lines from Game of Thrones.”
Source: IGN.com Emilia Clarke Survived Two Brain Aneurysms During Game of Thrones