An offhand comment from Carla (Judy Reyes) sends Turk (Donald Faison) into a workout routine with Dr. Cox (John C. McGinley), consequently taking him away from crucial Carla time. Elliot's (Sarah Chalke) relationship with Sean (Scott Foley) hits a snag when the lovin's so good that she's missing crucial prep time. And J.D. (Zach Braff) gets accidentally stabbed by a syringe of Hepatitis infected blood causing him to freak out and cut off face time with an infectious patient.