The most important aspects dell'Iyengar Yoga is the importance it attaches to the alignment of the body, such as the positions are placed in sequence, the days of holding a position and sometimes the use of certain tools, such as supports to facilitate the development of some positions and to perform them to meglio.Lo yoga teaches the body to regain the alignment, to create space inside, to strengthen those muscles that work for its stability and its resistance. Many asanas are difficult to perform when the body is not very elastic, out of alignment or has small defects, however, he is a great benefit from the positions and their maintenance. How to solve this problem? B.K.S. Iyengar, during his long teaching experience to thousands of people around the world, has developed tools that can help you practice the positions without losing alignment or rather, to find him: brick wooden or rubber ropes , belts and blankets, benches and other various objects.