Sweat poured like rain as he trained hard every day. Even Yamcha was astonished by Yinsen's dedication. Whenever Yamcha rested and saw Yinsen still training tirelessly, he felt uncomfortable all over and voluntarily cut his own breaks short to rejoin the training.
Since Yinsen did not attend school, he had even more time to train. Even when Yamcha did not see it himself, he knew Yinsen was not slacking off during those hours but training even harder.
Once he had decided to focus on physical training, Yinsen knew exactly what he needed to do. Whether he had a teacher's guidance at this point did not really matter. He had traveled through so many worlds and learned so much knowledge; he knew how to train his body properly.
Nor did he lack actual combat experience. As long as he raised his physical attributes, he could perfectly convert them into Combat Power. In Yamcha's eyes, this became: "Yinsen is a martial arts genius!"
As time passed, Yinsen's weighted load caught up with Yamcha's. He did not wait until he had completely adapted to ten kilograms before increasing it. Once he felt that ten kilograms no longer affected his movements much, he immediately switched to twenty kilograms and continued training while wearing that weight.
He persisted for half a year before he could finally move freely without being affected.
After that, he did not switch to forty kilograms. Yinsen could feel that his body needed a period of adjustment. Forcing himself to add more weight would not produce better results.
So for the following period, he maintained the twenty-kilogram load and began sparring with Yamcha.
Yamcha gloomily discovered that he could not defeat Yinsen. Even using his ultimate move, the Wolf Fang Fist, was useless. Yinsen could always perfectly evade his attacks and