Fire-breathing dragons and WhiteWalkers and Giants, oh my! There are so many mythical creatures and moments in Game of Thrones that help make it one of the most fantastical shows on TV right now.

However, is everything about Game of Thrones completely fiction? I mean, these beasts obviously don't exist IRL, but what about the ways the characters act or the outcomes of some of the series' battles? Can we use actual science to help explain them?

Apparently you can, and just in case your brain hurts a little from even thinking about doing so, Kyle Hill has already done it for you, breaking down the "Science of Thrones" in his latest Because Science video for Nerdist.

In the video, Hill shows us that the reason Hodor only says, well, "Hodor" may be explained by a real neurological condition called Expressive Aphasia. He also analyzes the 400,000-calorie diet Daenerys Targaryen's dragon Drogon would have to maintain in order to keep on flying. Oh, and that (SPOILER ALERT) infamous Season 4 battle scene when the Mountain crushed the Red Viper's skull, is that humanly possible to do? If anyone can, Hafthor Julius Bjornsson, the actor that portrays the Mountain on Game of Thrones who just also happens to be Europe's Strongest Man, would probably be the guy to do it.

Yes, you'll learn more about the science behind Game of Thrones from this video than you ever thought you wanted. But hey, what else do you have to do on a Friday afternoon?

Check out the full video below.

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