Most people think creatine is just a gym supplement. In this conversation, Dr Scott Forbes, a creatine researcher since 2008, breaks that idea open. We go from muscle to mind: how creatine fuels your brain under stress, what actually happens to your kidneys, why so many people are terrified of hair loss, and how this one molecule might support depression, sleep deprivation and even brain injuries. We also get brutally honest about dependence on supplements. If you won’t move your body, creatine won’t save you. Scott talks about why exercise is foundational, why the effect size of creatine is small yet meaningful, and how to think about performance, ageing and mental health with more integrity and less hype.