Once a niche challenge for hardcore athletes, Hyrox has become one of the fastest-growing fitness trends worldwide. It blends elements of endurance running with functional strength work in a way that ...

Fire-breathing challenge reportedly leaves 14-year-old Pennsylvania girl intubated with burns after blowing isopropyl alcohol onto flame. Fire Chief Tommy Dick warns parents.

Fitness advice spreads fast online, but not all of it is grounded in science. Research reveals which popular trends hold up and which don’t.