Conventional wisdom touts the many benefits of deep breathing to prevent or reduce anxiety and panic attacks. The National Institute of Stress and Anxiety states, "Some experts consider deep breathing to be the most important step anxiety sufferers can take in reducing symptoms and promoting overall health." But, a new treatment, called capnometry-assisted respiratory training, or CART, may show just the opposite; that taking shallow breaths helps to alleviate the feeling of suffocating or

