For the whole story, read The Emperors of Chocolate . Well, its not simply a matter of will power. As many chocoholics probably suspect, chocolate contains numerous mood altering chemicals. In the 1940s and 50s, Hershey extracted a stimulant called theobromine from its cocoa beans and sold it to Coca Cola, which used it to pep up its soda. At Mars, product quality is an obsession.
Workers constantly taste each product to ensure it is being properly made.
Having to eat a Snickers each hour is one thing, but Mars is also the world's largest pet food manufacturer. Every day, Mars workers taste Bowser's chow to make sure it meets the company's standards. Walking through a candy factory and sampling goods fresh off the production line is not what you might expect. Some candies need to age, like a fine wine, to reach their full potential. A 3 Musketeers, for example, has the consistency of a chewy taffy when it is first produced.