"Regulate your nervous system" is suddenly everywhere. TikTok's #NervousSystemRegulation has over 60,000 posts: vagus nerve icing, ear massage, slow blinking, EFT tapping. One icing video alone has 3 million views. Some of that is useful, and some of it is the internet rediscovering what yoga teachers have done for a very long time. Before you buy an ice pack for your neck, here's my Ayurvedic practitioner's view. In Ayurveda, vata is the energy of movement. Its qualities are cold, movement, lightness and subtlety. Add cold, and you add more of those qualities. In plain English: cold increases movement along your nervous system, and that can mean more nervousness, not less. So icing is not calming or grounding in the Ayurvedic view. That's a traditional teaching, not a modern study. I also couldn't find solid research behind icing or ear massage, trending or not. What does hold up: slow breathing measurably raises vagal heart rate variability. A 2022 review of 223 studies found this during the breath, right after, and after repeated practice. What's thinner: going from "your HRV went up" to "your anxiety went down" is backed by smaller, newer reviews so far. Online, I see some teachers who focus only on how to do the postures correctly, and others who focus only on breathwork. Here at Yoga Wolf we combine both. If you've taken my classes, you know that every muscular action in a posture goes with a specific breath: inhale, tone your inner thigh muscles; exhale, firm your core. When you do that with the breath we use here, the ujjayi breath, it works on your nervous system. We also use restorative postures, like legs up the wall, and even headstands, where we work with the breath while we hold the position. In my experience, that has a grounding, settling effect. You'll find them in the classroom: https://www.skool.com/yoga-40-7155/classroom One thing to try today: stand up. Inhale, and move your arms out to the side and up over your head, looking toward the ceiling. Exhale, and lower your arms down to your sides. Make your movement exactly as long as your breath. Keep the breath as long as you can without gasping. Then notice whether this settles your nervous system a little.