Yeah, in undergrad I worked with a guy who was very bad at managing his blood sugar levels. One weekend he was alone in the lab and up on a ladder adjusting a ceiling-mounted camera; he passed out, fell, ripped the $30k camera out of the ceiling, caught the PC it was connected to on fire, and woke up on the floor a while later with no recollection of any of it. Another time he was biking home in the winter and passed out, luckily to be discovered in the snow by another colleague who happened to be walking home.