In 2000, a truck rear-ended my friend Andrea’s car as she stopped at a crosswalk in a school zone. The truck was going at least 45 miles per hour when it slammed into her. The accident damaged muscles, nerves, and bones from the base of her skull to the bottom of her left leg. It left her with an injured spine, pelvic instability, and significant leg injuries. She has been living with chronic pain ever since.