As someone with a history of chronic back pain and other niggling aches and pains I've had an interest in reading about the science of pain. There is a lot going on in this area and the understanding that science has of pain is far different from what most people would think is going on. There is no denying that people have real actual pain, but the current understanding is that the pain is something that the brain creates as a way of protecting you from threats. There is a lot out there on this and a lot to reflect on, but here are some good start points: What recent pain science can do for your chronic pain right now
.......interesting things about fitness, strength, diet and performance.