Did you know? That this small “teapot” allows you to pour warm water up one nostril until it fills your nasal passages and drains out the other nostril. Although it sounds painful, the concept of flushing the sinuses is a painless part of traditional yoga. The practice can noticeably improve chronic sinus suffers, those with severe allergies, and people recovering from a cold. It’s best to use distilled water or boiled water warmed to a comfortable temperature.