Hi Product Hunt! Three quick questions about your autonomic nervous system: Where is it? How does it work? What actually has to go wrong for it to feel "broken"? I couldn't answer any of them, even after mine broke down. I know firsthand how overwhelming that is. "Autonomic nerves" is a phrase people hear all the time, often next to words like exhaustion, anxiety, panic and depression. Yet almost nobody explains what the system actually is. What changed things for me wasn't a tip. It was finally learning what this system is and how it works. Once I understood what was happening inside me, I could see hope again, and things felt lighter. So I built a simple way to learn it. For people who are going through it, people who wonder whether they are, and the people around them. To be clear: it is not a treatment and it gives no medical advice. It's the biology, explained. WHAT IT ACTUALLY DOES FOR YOU You open it on the train. A few short pages explain why your pupils widen in the dark without you deciding anything. Then five questions check whether it stuck. A few chapters later, you realize your pounding heart before a presentation and your watering mouth before dinner come from the same system, pulling in two directions. Plain words first, terms later. The readings use everyday language and only five comparisons: a control room, an accelerator and a brake, a phone call and a letter, a key and a keyhole, a fire alarm. Technical names live in an optional "go deeper" section. Read it, then check it, right away. Each chapter is a short reading followed by a 5-question quiz. Wrong answers never lock you out. The ones you missed come back later in review. Honest about what isn't known. Actually honest. One chapter is about the body's alarm ringing louder than the situation calls for. It separates what research has established from what is still unknown. Every reading lists its sources: textbooks and peer-reviewed papers you can check yourself. Free. No in-app purchases, at all (ad-supported). No account. Works offline. Android for now, in 19 languages, because this isn't a problem that belongs to one country. WHY I THINK THIS MATTERS Almost everything written for people who are struggling with this assumes they want a fix: do this, avoid that, try this routine. Some people do. But when I was in the middle of it, tips without understanding just gave me more things to worry about getting wrong. What I needed first was to know what the thing even was. I assumed I had to fix it before I could understand it. For me it was the other way around. I'd like to take some of that fear away from everyone living with it, in as many languages as I can. Two questions for you: 1. When you first heard "it's your autonomic nerves," what did you wish someone had explained? I'll read every answer and turn the good ones into new questions in the app. 2. Do you think understanding how your body works actually makes it less frightening, or am I overstating it? Thanks for reading. I'll be here all day answering comments.

What Are Autonomic Nerves?

Know your autonomic nervous system, and it gets less scary

Know your autonomic nervous system, and it gets less scary