What term describes a physical and/or mental lethargy triggered by various stressors?

The term describing a physical and/or mental lethargy triggered by various stressors is fatigue. Fatigue encompasses a state of tiredness that can result from prolonged exertion, stress, or lack of proper recovery, affecting both the body and mind. It can be induced by physical activities, emotional strain, or a combination of both, leading to a decrease in performance, motivation, and energy levels. Understanding fatigue is crucial in physical education, as it informs training practices and recovery strategies to optimize performance and prevent burnout.

The other options relate to different concepts. Recovery pertains to the process of returning to a state of balance after exertion. Metabolic by-products refer to substances, such as lactic acid, produced during metabolic processes but do not specifically denote lethargy. Muscle acidosis involves changes in the pH within muscles during intense exercise but is not a term that captures the broader concept of comprehensive lethargy related to stressors.