The SmartMat is a responsive yoga mat that seeks to improve one's yoga practice. Microsensors embedded in the mat record and provide adjustments to the user in real time. Courtesy of SmartMat hide caption

itoggle caption Courtesy of SmartMat

If it weren't for B.K.S. Iyengar, yoga wouldn't be quite as popular in the West. This photo of the yogi, who died this week at 95, was taken in Karnataka, India on May 3, 2005. Hemant patil/Corbis hide caption

itoggle caption Hemant patil/Corbis

People practice yoga at a fundraiser for a breast cancer foundation in Hong Kong. Ed Jones/Getty Images hide caption

itoggle caption Ed Jones/Getty Images