Uchi Hachiji Dachi is a stance in Kyokushin karate. It translates to 'Inside Figure-Eight Stance.' In this stance, the feet are positioned shoulder-width apart, with the toes turned inward slightly, forming a V-shape. The knees are relaxed and bent, providing stability and balance. Uchi Hachiji Dachi is commonly used for basic training exercises, such as practicing punches and blocks.