viz.

Image from "Apple Cores Are a Myth" on www.theatlantic.com 

One of my favorite things about yoga class is when the instructor, Iva, talks about how the various poses transform the inside of the body. In butterfly pose, she tells you about the rejuvenation of your spleen, kidney, and stomach meridians (i.e. channels of energy that run through the body according to Ayurveda). When you find yourself in a handstand, and it feels for a few seconds like floating, it’s probably because it’s one of the only times your organs get to hang upside down and all the blood in your body can recirculate. Twisting, as many a hungover yogi will know, detoxifies your body and wrings out your organs. Yoga instructors say these same things over and over, and after practicing for awhile, it’s hard not to believe them.