This simple exercise using the breath has amazing effects on relieving allergy symptoms, improving the immune response to both colds/flus, and for many auto-immune conditions. The breathing technique featured here, increases Nitric Oxide; regulates the immune system, warms the body, and opens the pores to stimulate sweating. Use it when you have early symptoms of a cold or flu, sinus allergies, post-nasal drip, or are suffering from an auto-immune condition.