Tried breathing exercise (buteyko method) where I gently breathe in and out, hold my nose, close my mouth, then walk around the house until I cant breathe any longer. Stand still and count to a minute, then do it again 6 more times. Within a day this has cut my cold/flu/asthma/allergies to 80%. I did it morning and night on an empty stomach. By the 3rd day I am 100% cured.