Who was gonna say?

So, urm, who was gonna say that the rules had changed. Basically, sleeping in exams is not allowed anymore. I found this out the hard way, with an examiner slapping his hand on my desk, saying that sleeping will not be allowed in our GCSES, so we are not allowed to sleep in mocks. I've never heard of this rule, but apparently, it's now a thing?

EDIT: So, I have spoken to the very few friends I have, and we have all realised it is one examiner forcing this rule, no one else is. So, there's one guy in his 50s who his against sleep apparently