Breathing Through The Nose

I found out that I have been breathing through the mouth which seems to be the case for quite a few people. From quite a few articles I have read, there could be dangers from breathing through the mouth so today I have been trying to  breathe more  through the nose.

While exercising, it seems difficult at first but I heard  it does improve later.



Here are some of the articles I  have read

http://www.myfaceology.com/2012/02/mouth-breathing-and-how-it-affects-your-health/
http://fitness.mercola.com/sites/fitness/archive/2013/12/27/proper-exercise-breathing.aspx


Updated:
Here is an article which states otherwise about breathing  while running.
http://www.outsideonline.com/1783831/should-i-breathe-through-my-nose-or-my-mouth