Around a month ago, I ran a 5K and followed it with a full-body dumbbell workout. Halfway through a set of renegade rows, I felt something go in my back. It didn't hurt too much immediately, but it ...

The doctors and nurses at the emergency room in Jacksonville, Florida, were “perplexed,” as Dia Thomas remembers it. They believed her when she said she was in pain—imaging had revealed fractures in ...