The Cinnamon Challenge. You know the rules: Swallow a tablespoon of ground cinnamon in under a minute without drinking anything.

Sure, you've seen it attempted by hundreds of people. But you have to admit, when the contestant is Maisie Williams AKA Game of Thrones' Arya Stark, it adds a certain valar morghulis charm to the inadvisable stunt, don't you think?

[Reddit]