How to treat brain freeze
If it is indeed the brain freeze you are experiencing, the cure is simple and can be done yourself. All you have to do is press your tongue to the roof of your mouth the moment you start to feel the pain. When you do this, there’s a heat and energy transfer from your tongue to the sinuses behind your nostrils, which will then warm the nerve bundles that cause brain freeze. Keep your tongue still against the top of your mouth until the pain gradually reduces and finally goes. Keep your tongue against the roof of your mouth till the pain from the brain freeze completely disappears.