This experiment comes from a question that I got from a subscriber. As I researched the question, it was even more interesting than I expected. It also seemed like a good excuse to eat lots of ice cream.
First off, I don't recommend giving yourself a headache. If you have ever had an ice cream headache, you already know what it feels like. If you have not, you probably won't, as only about 30% of people get this kind of headache. They usually happen on hot days, when you quickly eat lots of ice cream or other very cold things. Suddenly you feel a strong pain in your head, which many people call brain freeze.