What is the saying that the right ear has fever for no reason?

This is because of congestion, which is the same as blushing, but sometimes my ears will turn red when I move ~

According to American media reports, there is a traditional saying: If your ears feel feverish, it is someone chewing your tongue behind your back. However, Australian scientists have found that ear fever is more likely to be caused by your brain and active brain waves.

Researchers from the Australian National University who participated in the research project said that if a certain area of the brain is more active, it needs more blood, so the arterial blood flow on both sides of the neck will increase. This blood is shared by your brain and inner ear, so you can judge that your ears are more active by measuring the problems in your ears.