![Participants stand in mud after overcoming an obstacle called "kiss of mud" at the Tough Mudder untimed hardcore endurance event in Arnsberg, Germany June 1, 2019. REUTERS/Wolfgang Rattay Stock Photo - Alamy Participants stand in mud after overcoming an obstacle called "kiss of mud" at the Tough Mudder untimed hardcore endurance event in Arnsberg, Germany June 1, 2019. REUTERS/Wolfgang Rattay Stock Photo - Alamy](https://c8.alamy.com/comp/2CMF7W3/participants-stand-in-mud-after-overcoming-an-obstacle-called-kiss-of-mud-at-the-tough-mudder-untimed-hardcore-endurance-event-in-arnsberg-germany-june-1-2019-reuterswolfgang-rattay-2CMF7W3.jpg)
Participants stand in mud after overcoming an obstacle called "kiss of mud" at the Tough Mudder untimed hardcore endurance event in Arnsberg, Germany June 1, 2019. REUTERS/Wolfgang Rattay Stock Photo - Alamy
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Tough Mudder obstacle course at the Kiss of Mud obstacle Drumlanrig Castle, Dumfries and Galloway, Scotland, UK Stock Photo - Alamy
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Tough Mudder obstacle course, girl smiling in mud on the Kiss of Mud obstacle Drumlanrig Castle, Dumfries and Galloway, Scotland, UK Stock Photo - Alamy
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