Naruto 82

Lee has difficulty trying to penetrate Gaara’s shield of sand. Gai admits to Sakura that Lee isn’t using Taijutsu only through choice, because he is unable to use Ninjutsu or Genjutsu. Gai advises Lee to take his leg weights off, which enables Lee to move at superhuman speed. Gaara is shocked, as Lee becomes the first human able to physically put a scratch on him.