This article originally appeared in MindBodyGreen.

When anxious feelings arise, it's helpful to be equipped with management techniques in your toolbox. Similar to breathwork and meditation, mbg recently discovered one free and effective way to quell anxiety—and it's seriously cool (at least, in terms of temperature). 

According to a TikTok video from London-based surgeon Karan Rangarajan, MBBS, BSc, sucking on a piece of ice can help manage anxiety. To figure out exactly how ice does this, mbg spoke with Uma Naidoo, M.D., nutritional psychiatrist and author of This Is Your Brain on Food. Here's what she has to say about the chill hack.