Iyengar: Iyengar Yoga is based directly on the teachings of world-renowned yogi B.K.S. Iyengar. Each Iyengar class focuses on a different sequence of poses. Over time, study in the Iyengar system will expose students to a full range of poses, developing strength, endurance, flexibility, and inner calmness. Accuracy and alignment are emphasized, and students learn fundamental principles that allow them to do postures safely and effectively as they progress from beginning to advanced poses. As students become toned, some poses are held for longer periods of time to allow for reflection and observation. Props may be used to help students learn a pose, do a pose correctly, or increase the time poses are held.