by Edward L. Ayers. In the twelve years after the Civil Warâthe era of Reconstructionâthere were massive changes in American culture, economy, and politics. These were the years of the âOld West,â of cowboys, Indians, and buffalo hunts, of cattle drives, railroads, and ranches.
Oh no, not again! Another frozen treat, another brain freeze. âIce cream headachesâ happen when something cold touches nerves in the roof of the mouth, triggering blood vessels in the front of your head to swell. This rapid swelling causes the familiar, jabbing pain of a brain freeze.
How Brain Freeze Works. When you eat something cold too quickly, your brain doesn't actually freeze, but the temperature change stimulates nerves to cause a stabbing headache.Mike Kemp Images, Getty Images.Anne Marie Helmenstine, Ph.D.ow Brain Freeze Works. When you eat something cold too quickly, your brain doesn't actually freeze, but the temperature change stimulates nerves to cause a stabbing headache.