Iyengar Yoga, created by B. K. S. Iyengar, is a form of Hatha Yoga

Hatha yoga

Hatha yoga , also called hatha vidya , is a system of yoga introduced by Yogi Swatmarama, a Hindu sage of 15th century India, and compiler of the Hatha Yoga Pradipika....

 known for its use of props, such as belts, blocks, and blankets, as aids in performing asana

Asana

Asana is a body position, typically associated with the practice of Yoga, originally identified as a mastery of sitting still, with the spine as a conduit of biodynamic union...

s (postures). The props enable students to perform the asana

Asana

Asana is a body position, typically associated with the practice of Yoga, originally identified as a mastery of sitting still, with the spine as a conduit of biodynamic union...

s correctly, minimising the risk of injury or strain, and making the postures accessible to both young and old. The development of strength, mobility and stability are emphasized through the asana

Asana

Asana is a body position, typically associated with the practice of Yoga, originally identified as a mastery of sitting still, with the spine as a conduit of biodynamic union...

s.

Iyengar Yoga is firmly on the traditional eight limbs of yoga as expounded by Patanjali

Patañjali

Patañjali is the compiler of the Yoga Sūtras, an important collection of aphorisms on Yoga practice. According to tradition, the same Patañjali was also the author of the Mahābhāṣya, a commentary on Kātyāyana's vārttikas on Pāṇini's Aṣṭādhyāyī as well as an unspecified work of medicine .In...

 in his Yoga Sutras.

A form of Hatha Yoga

Hatha yoga

Hatha yoga , also called hatha vidya , is a system of yoga introduced by Yogi Swatmarama, a Hindu sage of 15th century India, and compiler of the Hatha Yoga Pradipika....

, it focuses on the structural alignment of the physical body through the development of asanas.