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"Neuroscientists Explain How the Sensation of Brain Freeze Works"
"Brain freeze is practically a rite of summer. It happens when you eat ice cream or gulp something ice cold too quickly."

"Why Do We Get Brain Freeze? Scientists Explain"
"Harvard Medical School scientists who say they have a better idea of what causes brain freeze, believe that their study could eventually pave the way to more effective treatments for various types of headaches, such as migraine-related ones, or pain caused by brain injuries."

"Banish brain freeze: New study shows how"
"It's a sweltering summer day, so you take a big sip of a refreshing, frozen coffee--and you're immediately doubled over with throbbing head pain."