Chocolate is delicious — that’s a fact backed up by research. The question, really, is why a bite into its scrumptious goodness is enough to send a person into an utter state of bliss. Enter science.

Add Yahoo as a preferred source to see more of our stories on Google. Indulging in chocolate is a surefire way to put a little pep in your step — and not just because it's so delicious. Chocolate is ...

Discover how to create a delicious chocolate cake featuring iconic KitKat bars in this recipe video. The step-by-step visuals ...