“Josef Koeberl managed to stay 2 hours, 30 minutes and 57 seconds inside a custom-made glass box filled up to his shoulders with ice cubes. More than 200 kilograms (440 pounds) of ice cubes were needed to fill up the box, after Koeberl stepped inside wearing nothing but swim trunks.” Austrian man spends 2.5 hours in box filled with ice cubes. (Related: I ate 12 sugar-free popsicles yesterday.)