Marathon athletes utilize two distinct mental approaches: 'focused' and 'unfocused'. Focused strategies involve paying close attention to bodily signals, while unfocused strategies involve largely disregarding these signals. Focused strategies, unlike unfocused ones, demand such intense concentration that they lead to mental fatigue lasting over a day. Given that it is crucial for marathon athletes to be mentally rejuvenated before a competition, which of the following most logically completes the argument?