Colorado family is warning others about a viral challenge that has left a 12-year-old in critical condition. Family members in Aurora found Joshua Haileyesus on the floor of a bathroom last week after he apparently tried to choke himself as part of the "Blackout Challenge." The dare to gain a rush of euphoria from choking has been around for years but has recently become popular on the TikTok video platform. Joshua's father is telling other parents to be aware of the challenge and to make sure the children understand the difference between what they see online and something that could kill them.