When I turned 25, I was gifted a whole host of things. Anxiety, back pain, and ADHD diagnosis. But I thought, you know, at least my brain is fully developed now.So, who else has heard that. That your prefrontal cortex fully develops by 25. Congratulations.You fell for the same lie that I did. So there has not been a single study that actually says your brain fully develops by 25. What happened was that there were a series of studies then that showed different levels of maturity between your late teenage yea ...