Chen He's Power (Part 2-Last)
It was during the period of time when Bai Zemin had set out with a small group of three people to the north in order to see how such an example of a large camp was before finally deciding to conquer it or join forces with the opposing side that Chen He continued to improve his own strength practically without rest.
Chen He spent 72 hours without sleep at all and the only real reason he retired back then was because his Stamina stats had been mostly consumed and it was already a challenge for him to run, dodge enemy attacks, aim properly, pull the string of his bow, etc; everything had fallen below average and unless he wanted to die the wisest thing to do was to temporarily retire. Even his natural reflexes had dropped tremendously due to mental exhaustion.