The explanations of how Genesis projects were moving forward brought everyone through the night. Walker and the others wanted to rest, but they could manage. Walker himself felt that the fatigue was greater than what he had been used to, but that didn't mean he didn't have the strong mind to handle it.
While his body had lost a lot of the strength he had possessed, his mind was still sharp. Eh easily resisted the desire to take a break and rest. Instead, he pushed forward on many of the proposed plans to expand Genesis and to set up more roads to smaller towns and even to bring the dragon territories up to a better state of building to help them meld better with the rest of Genesis.
This surprised many who expected him to be unable to handle things right now. They didn't doubt him, but expected that he would need the chance to rest so that he could get back to hus prime.