The Health Benefits of Religious Festivals & Large Crowds - Laura Spinney

Despite as many as 70 million people descending on the confluence of three polluted rivers for Allahabad, India's annual Kumbh Mela festival, people leave the crowds feeling restored and in better health than when they first arrived. Laura Spinney, author of "Karma of the Crowd," in the February, 2014 issue of National Geographic magazine, tells Boyd that western medicine tends to not value the restorative benefits of communal living in the same way that Indian and Asian societies do, but the benefits are real and does impact our health positively.