I played and refereed soccer games as a youth and young man. I even did a couple of triathlons. I prided myself on my abilities and activity level. At 19 years old, while doing a timed, taped exercise program I pulled and tore some muscles in my lower back and groin. Within two days, I couldn’t walk and when I tried to get out of bed the next morning I passed out from pain. I passed out three more times before I could get the drugs I needed.
I spent six months rehabilitating. In classes, I mostly stood in back or behind my desk. It wouldn’t have shown up on an x-ray. But I know it was real. I experienced it and it put me out of commission from the activities I was used to doing for a long time.