Yoga in the office is one way to relieve some stress from your day. We run such chaotic lives, that sometimes it is nice to have a vessel to to ex-foliate all of the negative vibes. I am surprised that in this day and age, there are not more companies offering spaces for yoga. In a world of working 12-14 hour days, always being on call with your iphone in your hand, there has to be some escape.
I am not a spiritual advisor, nor am I completely at one with mother nature. But I do believe that the less stress that is in your life, the more productive you are. I think companies would be wise to offer yoga or meditation rooms for their employees.