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Tough Mudder contestants 'made to simulate sex and perform slutdrops during warm-up for endurance race', The Independent

Good Morning Britain's Susanna Reid and Kate Garraway prove they aren't afraid to get down and dirty as they take part in pitiless Tough Mudder challenge

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Tough Mudders! TODAY anchors plunge in ice water, crawl through muck

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A Tough Mudder Learns to Listen to Her Pain - WSJ

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This 83-year-old just owned the Tough Mudder race

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GQ Fitness: Rules of Shirtless Running