Chocolate is packed with antioxidants and certain nutrients including iron, copper, magnesium and potassium. Your body may need more of these nutrients and crave chocolate as a response.

In addition to this, chocolate contains phenylethylamine, which controls oxytocin and endorphins, both of which will give you a feeling of wellbeing and even euphoria.

Chocolate also contains anandamide, a chemical that acts like THC, the active ingredient in marijuana. This, in addition to the increased endorphins in your brain, when you eat chocolate explains why you crave chocolate.