I’ve always been someone to have a serious resting face while doing anything. My day was stressful and long, so I had virtually nothing I could think of to smile about. Once home from work, I turned the tv on for background noise as I cleaned. While I was up doing so, I glanced at the tv and there was a particular scene that made the camera linger on a character smiling, and cause me to involuntary smile until the scene changed. What caused that to happen? I truly caught myself and was sort of shocked afterwards.