Take a deep breath in through your nose. Hold it a couple of seconds and slowly breathe out through your mouth. Relax your shoulders; stretch your neck. Breathe deeply in and out again, allowing your breath to become fuller and deeper. Focus on the way that the breath feels coming in and out of your body--the way it rolls along the back of your tongue, fills your lungs, the way your chest and belly expand, the way the air feels as it comes up from your body and out your mouth. Continue to relax and take deep breaths for as long as you feel comfortable.
I try to do this at least a few times each day and to take at least 5 deep breaths each time. I’m always amazed at how much better I feel afterwards. Give it a try, and see how it works for you.