According to Swami Chidananda, the practice of Yoga generates harmony in the physical, mental, psychological and spiritual aspects of a human. Yoga is said to have eight limbs, just like how we have our limbs.
1. Yama (moral restraints) 2. Niyama (spiritual observances) 3. Asana (posture) 4. Pranayama (regulation of breath) 5. Pratyahara (withdrawal of mind from external objects) 6. Dharana (concentration on one object) 7. Dhyana (meditation) 8. Samadhi (Supreme Harmony)