At dusk, the afterglow of the setting sun filtered through the dense Forest, bringing a trace of warmth to the woods that were about to be swallowed by darkness. At the edge of the Forest, a panting boy stood atop one of three trees.
That boy was Naruto, working hard to cultivate his chakra control.
Ever since the day Mirai had once again displayed his inhuman standard of ten shots, ten hits before the entire class, Naruto had practiced "tree climbing" in the Forest behind the Hokage Rock in Konoha Village every day after school. His method was simple: the moment school ended, he used chakra to sprint toward the woods, then immediately began climbing trees. Every time he fell, Naruto would use every possible method to avoid injury—for example, stepping on another tree to cushion his fall, or kicking off a tree in front of him as he dropped. If there was truly no other way, he could use pushing, rolling, and other force-dispersing techniques to reduce the impact when he landed—but then again, even if Naruto, with his iron-like hide, really hit the ground, it would not be a big deal. Finally, once night fell, Mirai would use chakra to sprint home, make something to fill his stomach, condense chakra while digesting his food, and then quickly go to bed.
At every stage, Naruto tried to find ways to strengthen himself. Running back and forth strengthened both his body and chakra. Failing to climb trees trained many things at once, including reaction speed, physical coordination, chakra control, and techniques for dispersing force. Even after returning home, he made full use of his limited time to build up his strength. In short, the entire routine was quite fulfilling, and everything contributed to becoming stronger.
As for why he did