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Brain freeze

Yow! That splitting headache you sometimes get for a bit when you eat something cold? It's because the blood vessels in the roof of your mouth constricted suddenly and referred the pain there via the nerves in your head. Warm it back up, and eat more slowly!

But that's not the kind of brain freeze we want to address today - unless you happen to have an ice cream cone or cold drink handy to give to the bad guy and hope he gets one... >>> read more