Nothing’s better than biting into an ice cream cone on a hot summer’s day — until that nasty brain freeze comes along. Caused by a sudden constriction of blood vessels, this painful sensation may last up to one minute, taking all the joy out of that double-scoop. To avoid this headache and make the most of the cone, savor that frozen treat and eat slower Already unfrozen? Read What Happens During Brain Freeze to learn more.