Most humans are born with an in-built alarm system. It’s an alarm system that stops you from climbing to the 50th floor of a Canadian skyscraper, jumping from ledge to ledge on the skyscraper’s exterior, and dying a horrible death on the concrete below. Russian daredevil Oleg Sherstyachenko doesn’t have an in-built alarm system. Or, if he does have an in-built alarm system, he certainly doesn’t pay any attention to it.