Performance-enhancing, a term commonly used in sports, refers to substances or methods used to improve an athlete's performance. However, some consider this term too narrow and believe it excludes other aspects that can improve performance, such as mental training. As a result, synonym suggestions include performance-optimizing, performance-boosting, performance-augmenting, performance-improving, or performance-enhancing methods. Nevertheless, these terms also imply potential negative connotations for athletes who may use performance-enhancing drugs. As such, it is crucial to acknowledge the distinction between natural methods and performance-enhancing drugs acting unethically in sports and other fields.