7. Electric Shock Therapy
This obstacle, by far Tough Mudder’s most infamous, contrary to gossip, won’t kill you. None of the obstacles will, because they’re designed and maintained by adventure-specialist engineers. But Electric Shock Therapy will sear you with a white-hot blinding live wire. Wires pulsing with as many as 10,000 electric volts dangle over a field of mud that you sprint through.
Hint: Watch out for the bales of hay scattered in various locations on the field. Trip over one of these and you’ll gag on a mouthful of electrifying mud.