Ashtanga
"Eight-limbed union." The classical raja yoga system of eight progressive stages or steps as described in numerous Hindu scriptures including various Upanishads, the Tirumantiram by Saint Tirumular and the Yoga Sutras of Sage Patanjali. The eight limbs are: restraints (yama), observances (niyama), postures (asana), breath control (pranayama), sense withdrawal (pratyahara), concentration (dharana), meditation (dhyana) and contemplation (samadhi).