There was actually a scene in Avengers 1, the first Avengers movie, where Thor had to strike Loki across the face and I was wearing the horns, which weight about 30 lbs, and I couldn't really sell the hit, the smack. So I just said to Chris I think you should just hit me in the face. It's a terrible idea, and I went down like a stone. I suppose on stage when you're doing a fight you have to it every night for 100 odd performances, I think if I was being hit in the face by Chris Hemsworth day after day, I don't know if I would be able to manage that. It wouldn't be sustainable.