Athletes and fitness influencers use creatine, but what is it? And does it work?

We find out if this fitness supplement can be used to build muscle mass, decrease fatigue and improve mental health

Creatine has long been popular among athletes. Olympians tout it, fitness influencers experiment with it, and Patrick Schwarzenegger’s gym bro character in The White Lotus added it to his famous shake.

It’s primarily considered a fitness supplement, but doctors are increasingly curious about its potential longevity and mental health benefits.