Last year, a Harris Poll commissioned by Yoga Journal estimated that 16.5 million Americans, 7.5 percent of adults, practice yoga. And according to this article in the Washington Post, those numbers are expected to increase this year. What’s up? Americans are up–agewise that is, and yoga happens to be particularly well-suited to bodies that prefer a low-impact workout that will build strength and improve flexibility. This particular piece gives us an idea of just how many years we can do yoga–by focusing on a remarkable woman who still teaches classes at age 87. Yes. 87. Read more.