At the peak of her career, when everything was going her way, Jennifer Lopez's body simply shut down. In 2002, after around 98 days of work without a single day off - she was filming movies, working on the "J.Lo" album and running between promotions - she suffered a total physical collapse on the set itself. The story she now tells is instructive precisely because it isn't about failure, but about the price of success that nobody sees.

"Every time I walked toward the stage, I noticed my heart racing a little," she recalls. The climax came when she returned to her trailer after an intense action scene. "I sat down and suddenly I couldn't see. It was as if something had been placed in front of my eyes and I couldn't focus. And I couldn't move." Completely paralysed and blind, she called for her long-time friend and assistant Arlene, who at first thought she was joking. "Arlene, I can't move. I can't see," she had to repeat.

At the hospital, after ruling out neurological causes, doctors determined it was a total physical collapse from exhaustion. "No, you're not crazy - you shut down," the doctor told her. The recommendation was a single, clear one: drastically cut her workload. The body had sent a bill the mind had refused to read for months.

Lopez admits the collapse also coincided with the psychological burden after her breakthrough role in 1997's "Selena." "That's when I started having panic attacks," she says. "Your life changed in a way you can no longer control... and you can't go back." It's a scene familiar not only to stars - anyone who burns out at work until they drop understands the message. Sometimes the most expensive lesson is the one your body keeps for you when your mind refuses to listen.