Ashtanga Vinyasa Yoga is a style of yoga codified and popularized by K. Pattabhi Jois during the 20th century which is often promoted as a modern-day form of classical Indian yoga. Ashtanga Yoga is named after the eight limbs of yoga mentioned in the Yoga Sutras of Patanjali.
Both Pattabhi Jois and Sharath Jois, his grandson, encourage practice of Ashtanga Yoga – all eight limbs. The first two limbs – Yamas and Niyamas – are given special emphasis to be practiced in conjunction with the 3rd and 4th limbs (asana and pranayama).
According to Patanjali, the path of internal purification for revealing the Universal Self consists of the following eight spiritual practices:
Yama [moral codes]
Niyama [self-purification and study]
Pranayama [breath control]
Pratyahara [sense control]
Samadhi [absorption into the Universal]