FITNESS By N., Sam M.S. - 6 1. The set of attributes a person has that enables them to carry out daily tasks and perform physical work. 2. Biology. The ability of an organism to produce offspring. FITNESS: "Joe had sufficient fitness to work and exercise each day." Related Psychology Terms ADOLESCENCE (Theories) Counselor's Role in Emergency Teams AER HUNGER APRAXIA (literally, “inability to act or do”) MONOTONY ALCOHOLIC ADDICTION CEREBRAL CORTEX RETICULAR FORMATION (Reticular Activating System, RAS) Piaget’s Theory of Cognitive Development ASTHENIC REACTION (Neurasthenia) Cite this page: N., Sam M.S., "FITNESS," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/fitness/ (accessed January 18, 2022).