I noticed in that article that Ygrec was just discussing...

(The article)

(Where Ygrec discusses it)

... that the title of the PC article refers very definitely to "willpower" but the word is used only one more time, in the first paragraph.

OK, so maybe Rick Nauert (at PC) is only repeating what the University of Alberta article says, and the author of the University of Alberta article will explain to us how willpower works. But no! -- "In an article recently published in the journal Appetite, Fisher’s research notes that while people know the rules surrounding good eating and proper nutrition, they seem to lack one common component that often costs them the battle of the bulge: willpower." Again, that's the only mention of willpower; and again, that's only from an announcement (by one Jamie Hanlon) of Fisher's article, not from the article itself. I haven't found out where to access "the journal Appetite" to see what Fisher himself has to say.

I continue, for the moment, in my suspicion that "willpower" is actually a myth. We're apparently expected to understand it as part of our cultural heritage, though, so it's rare for anyone to try to define or explain it and the myth goes on uncontested.

"Daddy, why isn't the emperor wearing any clothes?"