The human body is rapidly becoming oxygen deprived. We have become a society of shallow breathers. When we are anxious and stressed our breath follows suit. Our muscles become tensed which causes our breathing to become constricted. Factor in our sedentary lifestyles and shallow breathing becomes a lifestyle habit.
So when you find yourself feeling anxious and tense and your breathing is short and labored simply surround yourself in a relaxing and positive environment and just breathe.