B.K.S. Iyengar introduced the emphasis on correct form in asana. With this in mind, he also introduced the use of yoga props, now widely employed by most styles of yoga. He developed and refined yoga's therapeutic applications. Among numerous international awards Time Magazine in 2004 named him one of the 100 most influential people of the 20th century. His work is now incorporated into many types of yoga, physical therapy and body work.