Possibly the anandamide contained in those chocolates.
Chocolates are known to cause the brain to release endorphins.
Researchers say chocolate triggers feel-good chemicalsFebuary 14, 1996
"Now, researchers have found that eating chocolate, the number one food craved by American women, causes the brain to release endorphins, chemicals that make us feel good."
"So we eat chocolate so we release and experience pleasure and so as a result, we crave chocolate,Ó said Adam Drewnowski of the University of Michigan. "We want chocolate in times of stress, anxiety, pain and so on. Chocolate is a natural analgesic, or pain killer."
"Other researchers have also said chocolate contains substances that might mimic the effects of marijuana, boosting the pleasure you get from eating the stuff."
"Piomelli found that chocolate contains anandamide, which is also produced naturally in the brain and which activates the same target that marijuana does."
"Other researchers believe chocolate cravings have something to do with serotonin, a brain chemical that makes us feel relaxed."
Based upon CNN Food's article by Correspondent Linda Ciampa
→ source (external link)
The Rich Benefits of Eating Chocolate
by Dr. Mercola
"There's actually a chemical reason called anandamide, a neurotransmitter produced in the brain that temporarily blocks feelings of pain and depression."
→ source (external link)
However, I don't think that it'll suffice to cause such a "feel good" sensation as described so vividly by the OP.
Besides, it'd be slightly irresponsible to recommend such an amount without proper citation of references or elaboration of the experiences, which I really hope to read more of.
Edited by Jun Han, 22 July 2014 - 08:50 AM.
