Why designate a meditation hallway at work?

The Globe and Mail recently posted a piece called Power points: Walking the halls for a moment of peace. 

In it, "The Manager" writer Harvey Schachter points to Mindful.org blogger Janice Marturano's post about the concept of a meditation hallway:

Walking the halls for mindful moments

Janice Marturano, a vice-president at General Mills Inc. and founder of the Institute for Mindful Leadership, suggests picking a hallway at work through which you will always try to practise walking meditation, noticing the sensations of your body, the colours and the smells. If your mind is pulled to your next meeting or your last e-mail, return it to the present—and, of course, don’t take any cellphone calls.