For the past several weeks, I’ve been going to physical therapy. This is new for me. In all the years I’ve played sports, I’ve never been seriously injured until now. Sure, I’ve had my share of scrapes: years ago I sprained my thumb badly enough to wear a brace from wrist to elbow; last Fall I broke a finger playing flag football with some teenagers. But this summer, I sprained my sternoclavicular joint and strained my scalene and trapezius muscles doing hang cleans at Cros