Alexander Gustafsson’s longtime coach Andreas Michael apparently has one hell of a chin. How do we know that? Well, Gustafsson accidentally tested it on Thursday.

Ahead of his May 28 bout against Glover Teixeira at UFC Fight Night 109, the two-time title challenger Gustafsson posted a video of himself cracking his coach right in the face with a nasty spinning heel kick. But like a champ, Michael just took it in stride.

Could you survive that blow and stay standing? Catch video of the exchange below.