Motivation and arousal theories aim to explain factors affecting an individual's motivation levels and performance. The document discusses several theories: drive theory proposes that higher arousal leads to better performance up to a point; inverted U theory suggests there is an optimal arousal level for performance; and catastrophe theory examines how physiological and psychological arousal interact. Maintaining motivation over time also relies on setting new goals and challenges according to drive reduction theory. Coaches should consider an individual's arousal, experience, and learning needs to optimize motivation and performance.