Well, according to this it is.
Psychologists might disagree.
"Stress is what happens when your gut says no while your mouth is saying Yes, I'd be glad to."
Quoted from the book I am currently reading, Comeback, by Dick Francis.
Thank you Mimsie, who sent me the book.
I must be one of those people who listen to their gut, since I am rarely stressed. Until late November when numerous people remind me that I promised mince pies for Christmas. Each year I tell myself to shut my mouth....well, this year, I did.
Promised them to nobody. At all.
Of course there are a couple of people who will get some anyway.