Teenage boys' quest for dramatic body transformations goes viral, with a troubling twist

A growing number of teenage boys are chasing dramatic body transformations online, building massive muscles and shedding fat as they document their journeys for millions to see.

But behind the viral physiques lies a troubling trend: the use of powerful, illegal drugs never approved for humans.

At 16, Zaid Laila wanted to skip years of hard work and achieve a physique like the ones he saw online. His high school transformation videos quickly drew attention, showcasing a leaner, more muscular body.

Laila is open about his methods: