March 5, 2020 Dave Gu Personal Training, Educational, Vancouver, Wellness Chronic Pain: A Simple Perspective on a Complex System March 5, 2020 Dave Gu Personal Training, Educational, Vancouver, Wellness Chronic pain can greatly affect your quality of life and mental state. It can cause brain fog , affect your mood, and alter your ability to navigate the world. We hope this article can instill some hope in you if you’ve been fighting chronic pain.