I have a yogi friend that I follow on Instagram. He posts photos of beautiful, gravity-defying poses that take my breath away. How does the human body do that? I have another friend that I’ve known since high school. We both started practicing about 20 years ago, but she does it #everydamnday and can turn her body into a pretzel. These are not the reasons why I do yoga. I’ll never be able to balance on one hand or flatten my splits to the floor. But I still do it. Week in, and week out—I do it, while my body stays pretty much the same. Because there’s a more important reason…