The wise have, in the scriptures, spoken of Yoga as giving eight sorts of power. They have spoken of Yoga as gifted with eight limbs.
वेदेषु चाष्टगुणिनं योगमाहुर्मनीषिणः। सूक्ष्ममष्टगुणं प्राहुर्नेतरं नृपसत्तम॥