Taijutsu - Also known as body techniques or hand to hand combat is a form of fighting like ninjutsu and genjutsu. However unlike either two, Taijutsu relies on body movements to strike to the opponent's body or even defend once's self. The practice of this would be called martial arts, the main foundation to taijutsu. From then on, taijutsu can be combined with all sorts of things like ninjutsu, introducing us to nintaijutsu, like the Raikage exclusively uses. The other main use would be weapons. This was displayed when Lee/Gai used nun-chucks to fight certain individuals in combination with their taijutsu. Although taijutsu does not require chakra and relies solely on the human body's stamina, one can actually add chakra to his taijutsu to increase its strength and speed as well as durability, allowing the user to output the same "strength" as if he were using no chakra, with the aid
of chakra.
Eight Inner Gates - The eight inner gates are eight small "gates" that are located all throughout the chakra circulatory system of a shinobi. To avoid the body from being harmed by the usage of chakra, the chakra pathways allows the user to release a steady stream of chakra to perform necessary techniques. However, by opening the gate(s), the user is forcefully releasing/pumping out more then the necessary chakra by making the path ways bigger like opening a dam and letting the water flow out, drastically increasing the flow throughout the system. Although it may sound good in theory, it's actually a double edged sword. There is a reason as to why there are "restraints" in the chakra pathway and that is to avoid muscle and body break down. Allowing the body to circulate such vasts amounts of chakra with the gates open, easily tears through muscle tissue by working the muscles beyond their normal physical limits/capacities as well as severe exhaustion from making the heart and all other organs work much faster than usual. Due to the immense amount of stress and damage that the gates cause, the user is unable to keep them open for long periods of time. Also, should he open all of them (Up to the Eighth) the user will end up dying after the gate is activated from going far beyond the human capacities.
First Gate - The Gate of Opening or also known as the "Kaimon" gate which located in the brain. By opening this gate, the user is able to utilize his muscles by 100%. Normally, the percentage for the usage of our muscles is much lower. This is to prevent them from tearing apart and breaking down from pushing them so hard. When opening this gate the user is allowed to use the infamous Front Lotus, a highly complex technique that requires a high level of physically strength and speed to complete.
Second Gate - The Gate of Healing/Rest or also known the Kyumon gate is also located in the brain like the first one. This gate is a booster of sorts towards the first gate. By opening the second gate the user is able to increase his physical strength to a higher level than before as well as re-energize his body, allowing him to continue with the muscle abuse.
Third Gate - Gate of Life or also known as the Seimon gate is located in the spinal cord. This gate increases the user's blood flow, allowing the user to perform the reverse lotus, a mode advanced version of the front lotus I spoke of earlier.
Fourth Gate - The Gate of Pain or also known as the Shomon gate is also located in the spinal cord. This gate further increases the user's speed and power. However this is when the increase attributes start to tear through the muscle tissue by working them past their normal limits.
Fifth Gate - The Gate of Limit/Closing or also known as the Tomon gate is located in the abdominal area. This gate also increases both the user's speed and power.
Sixth Gate - The Gate of View/Joy or also known as the Keimon gate is located in the stomach area. This gate increases the speed and power of the user as well, allowing him to perform the morning peacock technique. The morning peacock technique relies on the user releasing a barrage of punches so fast that the mere friction caused by them sets his fists on fire, allowing the user to release fire blasts towards his desired target.
Seventh Gate - The Gate of Wonder/Shock or also known as the Kyomon gate is located below the stomach. This gate further increases the user's speed and power. By opening this gate, the user will be seen pouring out a certain colored type of sweat from every pore of his body. This very sweat evaporates near instantly, from the user's heat energy, making it seem as if he is coated in a cloak of energy/chakra. Due to the massive work the muscles are going through by opening the 7th gate, the muscle fibers now start to rip to shreds at this point, causing the user intense pain should anything come into contact with him. However, the user is able to utilize a higher leveled technique called the Daytime Tiger. The technique's main focus is the user punching his own palm so hard that mere air pressure caused by both colliding ends would send a massive blast of condensed air towards the desired target.
Eight & Final Gate - The Gate of Death or also known as the Shimon gate is located at the heart. Opening this gate will cause the heart to start pumping faster than it ever has, far passing its normal limitations, even the new found limits caused by the previous gates. By doing so, the user's speed and power go out the roof, far greater than any other gate.
Known Taijutsu Users - Might Gai, Rock Lee, Naruto Uzumaki, Kakuzu, Kakashi Hatake, Kiba Inuzuka.
Dangers to both user and enemy - Well I believe I explained the dangers to the user himself in the information stated above. As far as the enemy goes.. well.. lets just say he isn't going to have a good time battling against a user that has the gates opened. The main and obvious reason is because the opponent would most likely be unable to follow the inhuman speeds the user is moving at, as well as combat against such monstrous strength.
* Throws on the suit * Hell yeah!