With the excess mucus in the head sinuses, when the body’s temperature is reduced to a particular point in a cold environment, the mucus eventually starts to solidify.
The body increases its temperature to create a fever and liquefy the mucus to create a runny nose as the mucus drips out through the nose. This symptom is referred to as flu.
Flu is also created when the whole body is being detoxified over a period. The flu in this case is the body detoxifying the head sinuses and removing the excess mucus.
Flu recovery is a targeted detox that assists the body to remove the excess mucus in the head.