The correct alignment of the body in the different postures (asanas) and breathing exercises (pranayamas) form the basis of Hatha yoga as taught in the Iyengar yoga classes. The use of props as developed by BKS Iyengar (such as straps, bricks, chairs, walls and ropes) allows everyone, regardless of age and physical condition, to find the right alignment in yoga postures.
Iyengar Yoga is a form of Hatha Yoga but differs in the sense that it is a rigorous and standardized teaching system.
Iyengar Yoga teachers undergo a very demanding training, and undergo rigorous evaluations. They are able to demonstrate and verbally instruct each posture clearly. They will know how to put in place the necessary props to maximize the opening and awaken the intelligence of the body. Those props are providing support to beginners, additional intensity to the more advanced student, or used depending on the desired effect during the session.
Teaching is geared towards gradual and codified but steady progress, rather than rapid and ephemeral results. Each Iyengar yoga class is designed to be a unique sequence, developed by the teacher, that guides students to safe progression.