People invented "safety coffins" after being buried alive by accident so many times.
Doctors frequently misdiagnosed sick patients, which was common in 17th century England. Alice Blunden is one such example. After she drank sedatives, a doctor mistakenly declared her dead, and she was buried alive. This terrifying ordeal occurred not once, but twice. After exhuming her and discovering she was near death, they buried her again, only for her to struggle in the casket, still alive, until she died.