“They did also add some sideways rain,” he told BFI.

“There were some days we’re on the boat just off Favignana in Italy where it would be raining a little bit and grey, and then this other boat would just pull up alongside, and it was [special effects supervisor Scott R. Fisher]. He had a massive hose, and it was, ‘We’re going to just spray this hose all over you if that’s okay?’”

No, it was not comfortable inside that horse 

So perhaps it’s no surprise Damon said, “It wasn’t comfortable in there.”

And speaking to Polygon, Jon Berthnal (Menelaus) added: “When the horse was still in the water, and the water was coming in, that water was freezing cold.

“It’s no joke. There’s no frills. There’s zero. Nothing. And I really love that. I call it ‘No acting acting.’ [Nolan] just puts you in it.”

John Leguizamo genuinely couldn’t see on set 

John Leguizamo, who played blind swineherd Eumaeus in the movie, said he was forced to go method – whether he wanted to or not. 

“My guy Eumaeus is sight-impaired, so they gave me contacts that were opaque, so I couldn’t actually see,” he told BFI.