Anyway, Theobromine's light induced euphoria is usually enough for most mortals, including me.
When you buy chocolate, ALWAYS check it is not made with Palm oil, but only Cocoa butter.
This is one of the reason (amongst others) why large brands like Cadbury always produce very bad chocolate in countries where they are not complied to do it by the law -this includes the USA-, and junk food you should avoid at all cost, both because of your health, because of its taste, and the disastrous effects of Palm oil culture in the tropics.
99% of candy bars are junk food full of trans fats, by the way. Always avoid them if possible.