Naruto: The Eight Inner Gates, Explained

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In Naruto, Taijutsu entails hand-to-hand combat and martial arts, potentially bolstered by but not requiring the use of chakra, as in Ninjutsu or Genjutsu. This makes Taijutsu a viable alternative for those with poor chakra control, like Rock Lee, who uses it exclusively, and his teacher Might Guy, who knows a few Ninjutsu but specializes in it.

Lee, Guy and Lee's son Metal use the Strong Fist style of Taijutsu, which emphasizes raw physical power and requires intense training. They are also among the few ninja capable of opening any of the Inner Gates, which limit the output of chakra in all humans' bodies.

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Each of the gates acts as a limiter to protect the body from overexertion, and thus those unable to open them can only use about 20% of their full physical potential. Opening each gate consequently makes the user exponentially more powerful, but the risk to their bodies increases exponentially in turn. Each of the gates is named and lies in a different place on the body. The first gate, the Gate of Opening, negates its users thoughts from holding them back, and grants access to the powerful Front (or Primary) Lotus technique. It is located in the left hemisphere of the brain. The second gate, found in the brain's right hemisphere, is the Gate of Healing, which rejuvenates the body and grants increased physical strength.

When the third gate, the Gate of Life, is opened, major physiological changes occur in the user's body. Their skin turns red, their veins bulge, their hair stands straight up, and their pupils disappear. By using the Reverse (or Hidden) Lotus, the users' speed is increased drastically. Rock Lee used this technique to move faster than