An official DoD article describes the voluntary use of yoga at Walter Reed National Military Medical Center for its psychiatry patients:

It appears centuries-old practice involving postures, stretches, meditation and breathing provides benefits today at Walter Reed National Military Medical Center…

The author may not realize it, but by acknowledging yoga as “ancient” the DoD is acceding to yoga’s spiritual elements, as only in recent years have some tried to disconnect the physical aspect of yoga from its spiritual side. On the contrary, it seems Walter Reed is counting on the “mental” side of yoga as well:  Read more