We’ve all been there: You’re enjoying that heavenly smoothie and then—bam—brain freeze. And the scrunched-up face ensues. Well, scientists have new insight about its cause. The quick temperature shift can increase blood flow to the anterior cerebral artery, says a combined study from several universities.

This important discovery will hopefully lead to headache treatments. Until then, drink slowly and stay cool (and look cooler, too)!

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