According to Shape, the stresses and fast pace of modern life have created a generation of shallow breathers, causing us to take in less oxygen than we should. So, what is the "proper" way to breathe? Turns out, it's just a function of knowing which muscles to use.
Head over to Shape for the full story as well as some exercises to help you retrain yourself in the proper technique. Apparently, learning how to breathe correctly is almost as easy as, well, breathing. (Shape)