Women who ate a cooked breakfast each morning were at more than twice the risk of developing oesophageal cancer as those who began the day with a light breakfast - classified as anything other than a fry up.

BBC: Breakfast key to cancer risk

By offering free wi-fi, or a better breakfast, or other enhanced services, they market themselves to repeat customers more effectively than if they spent all the money on more billboards and image-building ads.

FORBES: 3 Ways To Get Back On Track If Your Marketing Isn't Working

The price of sugar is two or three times higher than world levels, and that increases the price of everything from breakfast cereal and all kinds of other products.

NPR: A Closer Look: Helping the Working Poor