Breathing is way too important. The way it synchronizes the entire flow of air in our body, it can streamline a wide array of things. However like all other things, it is important for your mind to be present initially as you understand the importance of breath and breathe properly in turn. Not elaborating about the mechanisms of breathe right now. But one thing we all need to understand, that it is not only how you breathe but what you breathe that is equally important. And if what you breathe is not pure oxygen but the diesel of the busy metros, better figure out a place, somewhere in the midst of greens, in a silent environment, where some real oxygen can feed your lungs.
We all need some real breathing, really! Do not consider the office air conditioner, by any means to be a substitute for fresh air. Nothing, really nothing, can come close to nature.