Some time ago I was talking with my cardiologist about S. He knew about S being in med school at the time. Somehow conversation drifted to when cardiologist was fellow and he talked about flying with his mentor (an MD himself) to conference where mentor was to give a presentation to large group. While walking to auditorium cardiologist (who dreaded public speaking) asked mentor what was his secret for staying calm and giving speech. Answer: atenolol.