At the start of the series, Naruto had practically no talent for ninja arts and struggled to even the basic of techniques; such as the Clone Technique. His only ability of note was his Sexy Technique; a creative and effective distraction against certain men, but a technique with no practical use.. Through perseverance and willpower Naruto would improve his skills to the point where, in an effort to graduate from the Academy learned the kinjutsu Shadow Clone Technique. After officially becoming a genin he would continue to improve his skill at a rapid pace, learning techniques and special abilities far faster than most shinobi could.
Life Force and Chakra
Even without taking Kurama's chakra into account, Kakashi estimated that Naruto's chakra reserves were at least four times greater than his own.Cite error: Closing </ref> missing for <ref> tag. After learning that his chakra was in constant flux due to Kurama's presence inside him and subsequent training, he was able to use his chakra more efficiently. This new found chakra control allowed Naruto to perfectly balance his physical and spiritual energy with natural energy and thus use senjutsu. Kurama noted that Naruto's chakra control at the level where, with the help of Kurama's method of transfering chakra, he could match his chakra with just about anyone, allowing him to give them massive amounts of chakra effectively, giving them chakra shrouds that protect and empower the recipients.
Because of his Uzumaki lineage, Naruto has considerable physical energy and life force. It is this lineage that allowed him to survive the extraction of his tailed beast, where such action would usually kill the host outright.. Naruto has been shown to have accelerated healing, taking it from either his Uzumaki lineage or Kurama's influence.. After learning that his ancestor Asura's chakra was reincarnated in him, Naruto was giving half of Hagoromo Ōtsutsuki's power he was able to rekindle Might Guy's extinguishing chakra and restore Kakashi's eye, despite the former being on the verge of death from using the Eight Gates and the latter eye being missing for decades.
As Kurama's jinchūriki, Naruto's chakra reserves are greatly augmented, having been mixing with his entire life, effectively moulding together. Because of this Naruto could perform chakra-taxing techniques in rapid succession without any ill effects. After training with Jiraiya, Naruto learned that he could demand chakra from Kurama to augment his strength, speed, healing capabilities, and techniques. In the event that his chakra points are blocked, he could use Kurama's chakara to force the pathways open. However, due to Kurama's negative influence, the fox's chakra would flow out of the seal more as Naruto turned to its aid, weakening the seal and allowing even more chakra to flow out. After a confrontation with Sasuke after his training with Jiraiya, Naruto vowed he wouldn't turn to the fox anymore and instead sought to a different power instead of relying of Kurama.