Ivan Pavlov

It has long been known for sure that the sight of tasty food makes a hungry man's mouth water; also lack of appetite has always been regarded as an undesirable phenomenon, from which one might conclude that appetite is essentially linked with the process of digestion.

Some of the reasons John McCain lost in 2008 were his lackluster campaign, his refusal to showcase Obama's extreme liberalism and, thus, his failure to demonstrate why he would make a better president than Obama.