TikTok’s “dry scooping” challenge: It’s not for the faint of heart. In fact, the death-defying trend that prompts participants to ingest a mound of undiluted supplemental energy powder caused 20-year-old stripper and OnlyFans star, Briatney Portillo, to suffer a heart attack. And while she was in the middle of having the heart attack in April, first responders didn’t think she was in cardiac arrest either. After weeks of watching digital fitness influencers swallow heaping tablespoons of pre-workout — a non-Food and Drug Administration regulated, caffeinated substance that athletes typically mix with water and drink before exercising in order to improve...