Your heart is racing, your shoulders are up by your ears, and you can't seem to settle, even when nothing is wrong right now. Lots of people search for how to calm your nervous system when they feel stuck on high alert like this. You may have heard the phrase "nervous system regulation" online. This post explains what that popular phrase means in plain words, what fight or flight feels like, simple ways to calm down quickly and over time, and when it may help to talk to someone.
This post is general information, not a diagnosis or medical advice. If you feel on edge most of the time, a counsellor can help you understand why.
How to calm your nervous system, the short answer
You can't flip an off switch on stress. What you can do is send your body signals that you are safe right now. Slow breathing, relaxed muscles, a steady routine and kind people around you are all signals of safety. Over time, your body may learn to come down from high alert more easily.
"Nervous system regulation" is a popular phrase, not a diagnosis. Most of the time, people use it to mean getting from stressed and wired back to calm and steady. That is a normal skill that everyone can practise. It takes practice, not perfection.
Think of it like a smoke alarm. A good alarm goes off when there is real smoke. A very sensitive one also goes off when you make toast. Stress can make your inner alarm more sensitive, so it rings for small things too. The steps in this post are ways to help that alarm settle, so it rings less often and quiets down sooner. You may not notice a big change right away. Small changes tend to build over days and weeks.
What fight or flight feels like in your body
When your brain senses a threat, your body gets ready to act. The APA Dictionary of Psychology describes the fight-or-flight response as a set of changes driven by the sympathetic nervous system. It raises your heart rate, speeds up your breathing and turns on your sweat glands, so you have energy to fight or run.
In real life, fight or flight can feel like:
A racing or pounding heart
Fast, shallow breathing
Tense muscles, a tight jaw or clenched hands
Sweating or feeling hot
Feeling jumpy, easily startled or irritable
A busy mind that won't slow down
This response is helpful in a true emergency. The trouble is that it can also switch on for emails, bills, a hard talk or a crowded room.
The good news is that your body also has a way back. The National Center for Complementary and Integrative Health (NCCIH) describes the relaxation response as the opposite of the stress response. Relaxation skills are ways to help bring that response on.
How to calm your nervous system quickly
If you need to calm down fast, try one of these:
Slow breathing with a longer exhale. Breathe in gently through your nose, then breathe out slowly, a little longer than the in breath. A review by Zaccaro and colleagues found that slow breathing was linked with calmer states in healthy adults. One small study by Balban and colleagues found that a few minutes a day of breathing with a long, slow exhale was linked with better mood.
Relax tense muscles. Squeeze your hands into fists for a few seconds, then let go. Notice the difference. Move up to your shoulders and face.
Use your 5 senses. Name 5 things you can see, 4 you can feel, 3 you can hear, 2 you can smell and 1 you can taste.
Move a little. Try a slow stretch, roll your shoulders, or take a short walk.
A quick safety note on breathing: breathe gently and comfortably. Never hold your breath for long or breathe very fast on purpose. If any exercise makes you dizzy or more anxious, stop and breathe normally.
How to calm your nervous system at night
Night can be hard, because worries get louder when things go quiet. Try a calm wind-down hour with dim lights and no news. Use slow breathing or muscle relaxing once you are in bed. If you can't settle, get up for a few minutes, do something quiet, and go back when you feel sleepy.
Calming your nervous system long term
Quick tools help in the moment. Day-to-day habits help your body feel safer more often. Small things add up:
Sleep. Aim for regular bed and wake times.
Movement. Walks, stretching or any activity you enjoy.
Food and water. Regular meals can keep your energy steady.
Routine. Predictable days can feel calming.
Fewer alerts. Turn off some phone notifications and limit the news.
Safe people. Time with people who make you feel at ease.
Saying no. Fewer commitments can mean less pressure.
If you notice that noise, crowds or busy days wear you out faster than other people, our post on being a highly sensitive person may feel familiar.
Pick one habit to start with. Trying to change everything at once can turn into one more stress.
When relaxation feels harder, not easier
Here is something people don't often talk about. Some people feel more anxious when they try to relax. NCCIH notes that relaxation techniques are generally safe, but that some people have reported negative experiences, such as more anxiety.
If this happens to you, you are not doing it wrong. Slowing down can bring up feelings you have been too busy to notice. This can be more likely after trauma, when feeling still may not feel safe.
Go gently. Keep your eyes open. Try moving relaxation, like walking, instead of sitting still. Keep practice short, a minute or two. You never have to push through.
If you are thinking about suicide or hurting yourself, call or text 9-8-8 now. If you or someone else is in immediate danger, call 911.
When your body stays on high alert
Sometimes the stress response doesn't switch off for weeks. It may be time to reach out if:
You have felt wired or on edge for weeks
You aren't sleeping well most nights
You startle easily or feel jumpy
You feel a sense of dread you can't explain
This started after a hard or scary event
These are signs that your body may need more support than self-care alone can give.
How counselling can help
Counselling can help you understand what keeps your body on high alert, and practise new ways to calm down that fit your life.
Our stress and burnout counselling can help if work, caregiving or a busy life has worn you down. Individual counselling is another option, for stress, anxiety or anything else on your mind.
Some therapists use cognitive behavioural therapy (CBT) to look at the thoughts that set off stress. Others use acceptance and commitment therapy (ACT) to help you make room for hard feelings. Some use body-based, or somatic, approaches that pay gentle attention to how stress shows up in your body. Our post on somatic therapy for depression explains more about this kind of work.
Your therapist will go at your pace and help you find what works for you.
You can see us in Kitchener, Waterloo, Cambridge or Ottawa, or by secure video from anywhere in Ontario.
Cost, billing and your first step
We accept Health Spending Accounts (HSAs).
We can direct bill many insurers. Coverage depends on your plan, so check with your insurer before you start.
Book a free 15-minute consultation with our admin team. Let them know stress or feeling on high alert is what's bringing you in, and they'll help you find a good fit.
If you're in crisis: if you or someone you love is in immediate danger, call 911. If you're thinking about suicide, call or text 9-8-8 any time, day or night.
Last reviewed: October 2026
Sources
Fight-or-flight response, APA Dictionary of Psychology
Relaxation Techniques: What You Need To Know, National Center for Complementary and Integrative Health
How breath-control can change your life: a systematic review on psycho-physiological correlates of slow breathing, Zaccaro and colleagues, Frontiers in Human Neuroscience, 2018
Brief structured respiration practices enhance mood and reduce physiological arousal, Balban and colleagues, Cell Reports Medicine, 2023