The Bayliss effect, also known as the Bayliss-Ramey effect or the Bayliss-Myers effect, refers to the phenomenon where a person's heart rate increases when they are expecting a task to begin. It has been studied extensively in sports psychology, where athletes may experience this effect before a race or competition. In addition to these synonyms, other related terms include the anticipatory response, pre-performance arousal, and the fight or flight response. Understanding these phenomena can be helpful in managing anxiety and stress in high-pressure situations, as well as in optimizing performance in many different areas of life.