How to feelings???

Apparently many people can identify that they are having a feeling by noticing changes in their body. I mean, obviously, yes, extreme emotion breaks through intended rational affect in this way, of course. But I'm not talking about that, I mean, like, people can both notice and IDENTIFY very slight emotions.

Is there a key? A cheat sheet? A guide? Some sort of spreadsheet or data set or, or, I don't know, a sticker-bedecked vision board? Something, ANYTHING, that just lists out physical symptoms and matches them with the correct emotion?

You know, like:

Eyebrows are itchy = mild sadness resulting from listening to music
Fingers are restless = slight interest in surrounding events
Spontaneous rapid blinking = growing vexation

I beg of you, if you know of a key, please link to it in the comments. I feel that everyone else has a map, and I have a faded vellum scroll with tiny marks on it and no way to interpret them.