Iyengar Yoga 101: What Is Iyengar Yoga?
Founded by B.K.S. Iyengar, Iyengar is a school of hatha yoga known for the use of props like wooden blocks, harnesses, cushions, and straps.
Iyengar is very focused on alignment — probably more so than any other style of yoga.
It's also good type of yoga for people who have a physical ailment and are looking for physical therapy, as well as those looking for a yoga practice that's a little more methodical in nature.