Even Time Magazine knows that breathing can help stress. Want to know why? When you exhale your heart rate slows down. OK so when you inhale it speeds back up again, but that is why in various breathing and stress management techniques you let the air out of your lungs slowly.
Stress can whack out your immune system and age you prematurely. So it is important to figure out how to deal with it. Slowing your heart rate down helps to calm you down. So remember to breathe. Air is free so why not take advantage of it.
Take a moment to practice, right now. Inhale a generous amount of air and slowly release it for 8 counts. Repeat as needed.