anxiety symptoms: what's happening in your mind and body
- 5 days ago
- 6 min read
Anxiety has a way of sneaking up on people. Sometimes it's obvious — a full-blown panic, a wave of dread before walking into a room. But a lot of the time, anxiety shows up quietly, in ways you might not immediately recognize as anxiety at all.
Maybe you've been having a lot of stomachaches lately. Maybe you're exhausted no matter how much you sleep. Maybe you've started canceling plans more often, or you catch yourself lying awake at 3 a.m. replaying conversations from three years ago. Maybe you feel a constant, low hum of "something is wrong" even when you can't point to what.
All of that can be anxiety. And understanding how it shows up is the first step toward working with it.
Why Anxiety Shows Up in Your Body
Here's something that surprises a lot of people: anxiety is as much a body experience as it is a mind experience.
When your brain detects a threat — real or perceived — it sends out an alert signal that triggers what's sometimes called the "fight, flight, or freeze" response. Your nervous system kicks into high gear, preparing you to either face the danger, run from it, or go very still and hope it passes.
This is an ancient, built-in survival mechanism, and it's genuinely brilliant for actual threats. The problem is, your nervous system can't always tell the difference between a predator in the woods and a difficult email from your boss. It responds the same way either time.
What's happening in your body during a threat response: Your heart speeds up to pump blood to your muscles. Your breathing gets shallower and faster. Digestion slows down (hello, stomach knot). Your muscles tense up, ready to act. Your brain's thinking center goes a little offline because in a true emergency, overthinking could lead to you getting hurt. This is why anxiety can make it hard to think clearly, make decisions, or calm down just by telling yourself to keep calm.
Physical Symptoms of Anxiety
These are some of the most common ways anxiety shows up in the body. You might experience just a few of these, or many of them — everyone is different.
• Heart racing, pounding, or skipping beats
• Chest tightness or pressure
• Shortness of breath or the sense that you can't get a full breath
• Nausea, stomachaches, or digestive upset
• Headaches or migraines
• Muscle tension — especially in the shoulders, neck, jaw, or back
• Sweating, trembling, or feeling hot and flushed
• Dizziness or feeling lightheaded
• Fatigue — sometimes deep, heavy exhaustion — even without doing much
• Trouble sleeping, or sleeping too much as a way of escaping
• Changes in appetite
It's worth noting: if you've been experiencing any of these symptoms, it's always a good idea to check in with a doctor to rule out any medical causes. Anxiety and physical health are deeply connected, and a good provider will look at the whole picture.
Emotional and Mental Symptoms of Anxiety
Anxiety in the mind tends to look like a lot of thinking — but not the productive, problem-solving kind.
• Worry that feels hard to turn off, even when you want to stop
• Thinking in loops — going over the same thing again and again
• Catastrophizing, or jumping to worst-case scenarios
• Difficulty concentrating or making decisions
• Feeling on edge, irritable, or easily startled
• A sense of dread or doom, even when nothing specific is wrong
• Feeling detached from yourself or your surroundings (like you're watching yourself from outside)
• Fear of losing control
Anxiety and Your Nervous System: The Window of Tolerance
Mental health folks sometimes talk about something called the "window of tolerance," which is basically the zone where you can think and feel at the same time. When you're in your window, you can handle difficult emotions without shutting down or spiraling.
Anxiety can push you out of that window. When that happens, your thinking brain (the part that reasons, plans, and problem-solves) gets a lot less access, and your survival brain takes over. This is why anxiety can make even small decisions feel impossible, or why you might say or do things you later regret when you were really anxious.
This is also why calming the nervous system — through breathing, grounding, movement — isn't just "nice to have." It's actually making it possible for your brain to function. More on that in our post on coping strategies.
Behavioral Symptoms — What Anxiety Makes Us Do (or Stop Doing)
One of anxiety's most powerful effects is on our behavior — specifically, avoidance.
When something feels scary or overwhelming, the most natural thing in the world is to stay away from it. And in the short term, avoidance works — it brings immediate relief. But over time, avoidance actually makes anxiety stronger.
Here's why: when you avoid something because it feels threatening, your nervous system gets the message that it was right to be scared. The threat signal gets reinforced. And the next time you think about facing that thing — or something similar — the anxiety is often bigger.
Avoidance can look like: Canceling plans at the last minute. Putting off difficult conversations. Saying no to things you actually want to do. Scrolling your phone to avoid being with your thoughts. Staying very busy so you don't have to slwo down and feel something. Checking things over and over.
None of this makes you weak or flawed. It makes you human. Avoidance is a protective strategy — it just tends to backfire over time.
Anxiety Symptoms in Different Contexts
Anxiety doesn't look the same for everyone, and it doesn't show up the same way in every context. For some people, anxiety is most noticeable at work or school. For others, it's most present in social situations, in relationships, at home, or in the body.
It's also important to say: anxiety symptoms can be shaped by the world around us, not just what's happening inside us. If you're navigating racism, transphobia, housing instability, immigration fears, poverty, or any other form of systemic stress — your nervous system is responding to real threats that exist outside of you. That's a survival response to an unjust situation.
Good mental health care holds all of this in mind. It doesn't rush to diagnose what might be a reasonable response to hard circumstances. And it also recognizes that even when the stress is external and real, support can still help — not to fix you, but to help you carry it.
When Symptoms Cross into Something More
As we explored in our main anxiety guide, the difference between everyday anxiety symptoms and an anxiety disorder comes down to a few things: how persistent the symptoms are, how intense they feel in proportion to the situation, how much they're getting in the way, and how much distress they're causing.
You don't have to check every box to reach out for support. If your anxiety symptoms are affecting your sleep, your relationships, your work, your health, or your sense of self — that's enough reason.
What comes next
This guide is part of a larger series on anxiety - what it is, what helps, and how to build the skills to navigate it. Here's what else you'll find:
What is anxiety? - understanding your mind, body, and when to seek support
Meditation techniques for anxiety - how mindfulness works and where to start
Anxiety coping strategies - practice tools include CBT skills, breathing, movement, and more
If you're curious about working with a therapist, we'd love to connect. MindBalance Mental Health Care offers in-person and online therapy across Minnesota, and in English, Spanish, French, and Hmong, with clinicians who get it.
We're a small team, so when you reach out, you're reaching real people who will take the time to address your inquiry.
About the Author
Merrily Young-Hye Sadlovsky (she/her/hers), MSW, LICSW, LCSW, is a therapist, clinical supervisor, and co-owner of MindBalance Mental Health Care, an independent holistic mental health practice serving Minneapolis and individuals across Minnesota. She is an EMDRIA EMDR-Certified Therapist and teaches clinical courses as an adjunct faculty member in an MSW program in Minneapolis. Her work focuses on culturally responsive, trauma-informed therapy supporting adoptees, BIPOC, immigrant, and LGBTQ communities, and college and graduate students navigating anxiety, OCD, trauma, disordered eating, and life transitions.
Educational Disclaimer
The information shared in this blog is for educational and informational purposes only and reflects our perspectives and understanding at the time of writing. It is not intended as medical, mental health, legal, or insurance advice, and should not be relied on as such. Reading this content does not create a therapeutic or professional relationship. For guidance specific to your situation, we encourage you to consult with a qualified professional.
