1. The Choking Game (Also known as Blackout Challenge)
This disturbing trend involves self-strangulation to induce a temporary high, with users posting videos to platforms like TikTok. Though once spread by word of mouth, it has circulated online widely.
The CDC links at least 82 deaths to this game between 1995 and 2007, and cases continue today including children acting without supervision. It carries severe risk of brain damage or death.