DON'T TOUCH YOUR FACE-The psychological effects of NOT touching your face

The following article explains the Psychological effects of not touching your face. Is this the real reason that they keep stressing this point over and over again???

[link to worldcrunch.com (secure)]

Interestingly enough, the article states:

Brain researchers working with Martin Grunwald at the University of Leipzig have succeeded in solving the puzzle. In the journal Brain Research, they report on many years of experimentation during which they analyzed the brain's electrical activity shortly before and after spontaneous face touching.
They discovered that touching changed electrical potentials in the brain, namely those having to do with storing information in working memory and emotional condition.
Shortly before touching the face, these parameters decreased. That means that working memory was overloaded, which is paired with a feeling of emotional overload. But after research subjects touched their faces, the parameters increased again.
Their conclusion is that spontaneous face-touching helps to regulate cognitive overload and stress. This "self-stimulation," as the Leipzig researchers call it, balances out disturbances in processing information and emotional swings.