The ability to remove limiters placed on a person in order to release the full potential.
Limiters are usually placed onto the body and abilities in order to prevent the user from suffering the strain of their full power, or to protect the surrounding area from the destructive potential. By disabling these suppressors, the user can gain access to this full potential.
Restraints can range from taking off heavy weights worn on the body to the forcefully disabling the body's subconscious of holding back.
Rock Lee (Naruto) unlocking five of the Eight Gates to release a large amount of chakra. He also wore heavy weight ankles that drastically increases his speed when taken off.
Might Guy (Naruto) unlocks all Eight Gates, releasing tremendous amounts of chakra that surpasses even the legendary Madara as Jinchūriki of the Ten-Tails, and would have died if not for Naruto saving him.