Iyengar also explains the practice and benefits of pranayama, yoga meditative approaches, mudras (symbolic hand movements), kriyas (cleansing exercises) and other yogic principles.
If you've seen pictures of yoga practitioners sitting with legs crossed and their hands in different positions, then you've seen examples of mudras.
While most stimulate acupressure points in the hands and fingers, some mudras involve the entire body.
Other modules include instruction for relaxation, pranayma, bandhas, kriyas, and mudras; preparing yoga classes and class communication; servicing clients with special needs; and factors for running a yoga business.
Yoga hand poses are also known as Mudras.