Eight Gates

The eight chakra gates are eight specific points on a person's chakra circulatory system. They limit the overall flow of chakra within a person's body. The basis for the idea of the chakra gates comes from the body's limits on the functions within it. This makes the body much weaker, but it keeps the body from expiring too soon. By opening these gates, the user can surpass their own physical limits at the cost of extreme damage to their own bodies. Rock Lee is able to open the first five gates. Guy, who taught Lee the skill, is able to open at least six. Kakashi can open at least one gate, as shown in during Kakashi's one-handed rock climbing where a shot of his brain shows the relevant point activating. It should be noted that in the brief time Lee used his chakra gates in Naruto Shippuden he seemed to be able to open the first five gates with ease unlike before in the garra fight. Opening the gates does not have a severe effect on Lee's body anymore probably because he has gained skill training. Also Lee has stated that he could open the sixth gate at the risk of dying in the Naruto Shipudden Movie. The gates and what they release are listed below:
 * Name: Eight Gates
 * Type: Kinjutsu, S-rank
 * Users: Might Guy, Rock Lee, Kakashi Hatake


 * 1) Gate of Opening (開門 Kaimon) releases the brain's limit on the total strain on the muscles, giving the user five times their normal strength.
 * 2) Gate of Rest (休門 Kyūmon) releases the brain's limit on the body's stamina, making a battle-worn person become miraculously ready to fight as if the fight had just started.
 * 3) Gate of Life (生門 Seimon) is located on the spinal cord, and releases the limit on the nervous system, which makes information travel at a faster rate and creates even more stamina. As a side effect, the user's skin turns brownish-red, indicating an increased blood-oxygen level.
 * 4) Gate of Pain (傷門 Shōmon) releases the limit on oxygen intake in the lungs, creating much more oxygen for the body to use.
 * 5) Gate of Closing (杜門 Tomon) releases the limit on the amount of chakra released at one time.
 * 6) Gate of Joy (景門 Keimon) removes the limit on how much fat and proteins the intestines can digest, and releases otherwise useless energy resources, giving the user even more power and stamina.
 * 7) Gate of Shock (驚門 Kyōmon) removes the limit on how fast the body can move, removes wastes from dead skin cells to feces, and gives the body a much cleaner system to work with, producing even more power and stamina.
 * 8) Gate of Death (死門 Shimon) opens the final gate located at the heart and uses up all of the body's energy. It makes the heart pump at maximum power and exceeds the power of every other gate. All the energy in every individual cell is used up, giving the user power well above that of any Kage. This "big bang" effect is only temporary, and destroys every muscle in the user's body including the heart. Death is assured when opening this gate hence the name.