Recommended by Alyson Stoner and psychologists, this tool is regulating, accessible, and subtle. — Anxiety can come on powerfully and suddenly, affecting your brain and body. Maybe you’ve experienced it as shallow breathing, shakiness, or sweating. Regardless, relaxing in the midst of that can feel overwhelming. But it’s not impossible. In a TikTok, actress and advocate Alyson Stoner showed how to practice the “five-finger…