Hafthor Bjornsson plays a very strong man named The Mountain on "Game of Thrones." And as it turns out, he's quite strong in real life, too. Here, in a video taken from the World's Strongest Viking competition on Jan. 31, Bjornsson takes five steps while lifting a 32-foot, 1,433-pound log, which broke a 1,000-year-old record, according to IronMind, a strength and weightlifting website.

Just try to watch that video without having your back start hurting. It's not possible.

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