Ninety-six people finished an eight-week mindfulness course, the kind sold as the gentlest stress cure there is. Afterwards, an independent interviewer went through their experience with them, side effect by side effect.
Eighty-three percent had had at least one side effect from the meditation. Fifty-eight percent had had one that felt bad. Thirty-seven percent had had one that got in the way of daily life. And between 6 and 14% had lasting bad effects, mostly of two kinds: being wound up, or feeling cut off from themselves. Calm, it turns out, has side effects.
None of that makes meditation a bad idea. Those rates were about the same as for other psychological treatments. But it does explain something you may have noticed. The friend who stays calm through a delayed flight while you lose it at the gate. The colleague who thrives in chaos while you need the week planned. The breathing app that settles your partner and leaves you more on edge than when you started.
Biology, not character flaws. Your nervous system fights some stress techniques for reasons of its own, and the problem is almost never the person.
When the technique is the problem
The mindfulness course was not a one-off. When 1,232 regular meditators were asked, a quarter of them, 25.6%, had at some point had a particularly unpleasant experience from meditating.
Relaxation has its version too. Why You're Still Exhausted Despite Doing Everything Right has the name for it, relaxation-induced anxiety: a spike of anxiety during the very practice meant to remove it. One account of it is that a worrier fears the drop from calm into bad news more than the worry itself, so staying braced feels safer than letting go.
So if a technique makes you worse, it is not proof that you are doing it wrong. It may be the wrong technique for you, or the wrong one for today.
The brake
Your heart has a natural pace of its own. Left alone, its pacemaker would fire at about 100 beats a minute. A healthy resting heart sits well below that, because the vagus nerve is pressing the brake all the time. Your resting heart is a heart held back.
Up to about 100 beats a minute, a faster heart is mostly the brake easing off. Beyond that, the accelerator joins in. Calm puts the brake back on. And the brake is linked to the breath: How Breathing Affects Your Emotional State has how the heart speeds up on every breath in and slows on every breath out, and why a slow, long breath out leans on the brake.
That is why slow breathing settles so many bodies. For some, it is exactly where things go wrong.
The breath-hold
When people with panic disorder were asked to hold their breath for as long as they could, they gave up much sooner than people with social anxiety or none. Their bodies seemed to raise a suffocation alarm early, a false one. A smoke alarm that goes off at toast.
That changes what "breathe deeply" means for them. Big, deep breaths blow off carbon dioxide, and too little of it brings the dizziness and tingling that feel like panic starting. For a body that already reads a breath-hold as danger, deep breathing can feed the alarm it is meant to quiet. Emergency Stress Relief, linked below, has the slow, gentle breathing that eased panic instead, and why the paper bag is best left alone.
Which types hold up
Stress advice loves types. Fight, flight, freeze, fawn, sensitive. Some of it has something underneath, and some of it is a label that spread faster than anyone tested it. Horoscopes for the vagus nerve, some of it.
Fight, flight and freeze are real responses, and the useful point is that they need different first moves. Emergency Stress Relief, linked below, has the practical sorting: if you are raging, burn it off first with hard movement and leave calming for afterwards; if you are frozen, start tiny, a toe, a hand, a deliberate blink, and build from there. Forcing calm on a body that is ready to fight, or forcing action on one that has shut down, tends to go badly.
Sensitivity holds up. Across seven sets of findings in 1997, a trait of high sensory-processing sensitivity stood on its own, separate from introversion and from general emotionality, with a 27-item scale to measure it. Some people simply take in more of the noise, light and mood around them.
And sensitivity cuts both ways. In 249 children, the most stress-reactive turned up out of proportion in both the most supportive homes and the most stressful ones: reactivity as sensitivity to surroundings, for better and for worse. W. Thomas Boyce, one of the team, later gave it a gardener's name in a book, The Orchid and the Dandelion. Dandelions do fine almost anywhere. Orchids wilt in a poor setting and bloom in a good one.
"Fawn", the habit of appeasing and over-accommodating under threat, is a term from therapy rooms. It describes something people recognise, but it has not been tested as a nervous-system type. Its better-tested cousin is "tend-and-befriend": a 2000 review argued that under stress, women in particular lean towards protecting others and reaching for company more than towards fighting or fleeing, with oxytocin and the body's own opioids at the centre. That is a stress response, not a flaw.
Company helps, but not just any company. Forty-five women did a stressful task at home: some alone, some with a female friend in the room, some with their own dog. With the friend there, their bodies reacted more and they did worse. With the dog, they reacted least. The explanation offered was simple: friends judge, dogs do not. No dog has ever said "I told you so". 5 Ways to Build Your Inner Strength and Live a Fulfilling Life has the hand that helped: married women facing a mild electric shock showed less threat response in the brain while holding their husband's hand, more so the happier the marriage, and a stranger's hand helped a little.
So a type can be a useful starting guess. It is not a diagnosis.
The ladder, and its critics
The most popular map of all is polyvagal theory. It says the vagus nerve has two branches that run three states, like rungs on a ladder: safe and social at the top, fight or flight in the middle, shutdown at the bottom, and that you can only climb one rung at a time.
It is a tidy story, and it has helped people describe how they feel. As biology, it is in trouble. Good metaphor, shaky nerve. In 2023, a detailed review went through the theory's five founding premises, from the two-branch vagus to the evolutionary story behind it, and argued that each one is likely wrong. The everyday advice built on top of it may still help, but not for the reasons given.
Use the ladder as a picture if it helps you. Do not mistake it for anatomy.
Warm or cold
Cold gets the attention. Unstoppable Energy: 14 Ways to Stay Focused and Strong Every Day has the cold end to a shower and the young men who spent an hour up to the neck in water at 14°C, with 530% more noradrenaline and 250% more dopamine in their blood afterwards. Cold is a jolt, and for a body that is wound up and needs somewhere to put it, a jolt can help.
If cold is your tool, it gets easier, and safer once it does. The cold shock response, the gasp and racing heart on first hitting cold water, is what makes cold water dangerous. Pooled across 17 groups, it faded with repeated immersion, after about four: heart rate, breathing rate and the size of each breath all calmed. The first few are the ones to take carefully, and never alone in open water.
The same test had a warm arm that nobody quotes. After an hour in water at 32°C, close to skin temperature, the same men's heart rate fell by 15% and their cortisol by 34%. Their blood pressure fell too.
So warmth is not the soft option. If you do badly with cold, if it leaves you shaky rather than sharp, a warm bath, warm hands round a hot mug, a hot water bottle, or a heating pad such as this may do for you what the cold shower does for someone else. The bath counts.
The weight on the bed
One tool for the nervous system has a better test behind it than its marketing suggests.
In 2020, 120 people with insomnia alongside depression, bipolar disorder, generalised anxiety or ADHD slept for four weeks under either a heavy chain blanket or a light one. The heavy blanket brought a large improvement in insomnia, and by day they were less tired, less low and less anxious. People who carried on with it kept the effect over a year, and people who switched from the light blanket to the heavy one improved too.
It was one test, in people with a psychiatric diagnosis. But for a body that settles under pressure, it is a simple thing to try. The test used a blanket filled with metal chain. This one, , gets its weight from glass beads instead.
The view
Between 1972 and 1981, patients recovering from gallbladder surgery in a Pennsylvania hospital lay in two kinds of room. Some windows looked out on trees. Others looked at a brick wall. When 23 of each were matched and compared, the tree group went home sooner, drew fewer negative comments in their hospital notes, and needed fewer strong painkillers.
So the oldest tip in this article is also the cheapest. When you are wound up, look out of the window, and if you can, look at something green. The brick wall had nothing to offer.
Breaking Free from Low Moods: Powerful Strategies to Reset Your Mind and Energy has the walk that did the same for the mind: after ninety minutes through a natural setting, people came back brooding less, and a part of the brain tied to that looping kind of thought had gone quieter. The same walk along a city street changed neither.
When it is not your nervous system
Sometimes the technique fails because the trouble is coming from somewhere else.
Caffeine. Emergency Stress Relief, linked below, has the plainest finding on it: in all eight controlled tests in people with panic disorder, caffeine raised anxiety or set off panic. No breathing technique outruns the coffee that set the alarm off.
A short night. The same article has the other one: even modest night-to-night losses of sleep predicted more anxiety the next day. A short night lowers the threshold for everything else here.
The drink that bites back. Foods That Lift Your Mood, and the Ones That Drag It Down has why alcohol, which feels like it calms you, leaves the nervous system jumpier than before as it wears off. The next-day anxiety has a name: hangxiety.
The body. Emergency Stress Relief also has the physical causes that no technique will touch: stopping or cutting down a medicine can bring on panic, and an overactive thyroid, heart disease, lung disease and low blood sugar can all produce the same signs. New symptoms, or symptoms worse than any you have had before, mean getting checked.
When nothing works
Sometimes everything stops working at once. The breathing that helped in spring does nothing in November.
Stuck in Survival Mode, linked below, has the name for the running total of a long hard stretch: allostatic load, the wear and tear of staying on alert. When it is high, there is less in reserve, and the same technique costs more.
That is not a reason to try harder. It is a reason to simplify. One small thing done most days beats a full programme you cannot keep up, and the real work is taking load off, not adding technique.
Feel it sooner
Every technique works better early, at the first tightening rather than the full storm. That depends on noticing.
Read Your Body's Signals: The Sense Most People Let Fade has the simple test: count your heartbeats for a minute without touching your pulse, then compare with the real number. Some people are close. Many are far off. And people who believe they are closely in touch with their bodies are often no better at it than anyone else.
When to stop
If a technique brings on panic, makes you feel unreal or cut off, or leaves you dizzy, stop. Put your feet flat on the floor, press your back against a wall, hold something cold, and look around the room at what is actually there. Then breathe normally.
Patterns that started long ago, and that come back however well you practise, are worth taking to someone trained to help with them. Find that person while things are calm, not in the middle of the storm.
The right tool
The friend who stays calm at the gate is not a better person than you. Their nervous system takes a different first step. So does yours.
Notice what you are in: wound up, shut down, or overloaded. Pick the tool that fits it, not the one that worked for someone else. And if it makes you worse, believe it.
The next time a technique leaves you more on edge than before, stop it, and try the opposite kind instead.
Wound up even on a quiet day? Stuck in Survival Mode: What Chronic Stress Does to the Body — why short bursts of stress rarely do lasting harm, the switch-off every zebra gets several times a day, and what months without it do to the body.
Overwhelmed right now? Emergency Stress Relief: What to Do When You're Completely Overwhelmed — what works when you are too wound up to follow ordinary advice: the sigh, cold water on the face, and how to choose by the state you are in.
Know someone whose meditation app leaves them more anxious than before? Send them this. It is not them.
Disclaimer: This article is general information. For advice about your own health, talk to a qualified health professional, especially before trying cold water or breathing exercises if you have a heart or lung condition, or if techniques bring on panic, dissociation or memories that overwhelm you. Chest pain, or breathlessness that does not ease, needs emergency help straight away.
Affiliate Disclosure: This article contains affiliate links. As an Amazon Associate, All For Life earns from qualifying purchases, at no extra cost to you. We only link to products we would recommend without the commission.
Sources
Britton WB, Lindahl JR, Cooper DJ, Canby NK, Palitsky R (2021). Defining and measuring meditation-related adverse effects in mindfulness-based programs. Clinical Psychological Science 9(6):1185–1204. doi.org/10.1177/2167702621996340
Schlosser M, Sparby T, Vörös S, Jones R, Marchant NL (2019). Unpleasant meditation-related experiences in regular meditators: prevalence, predictors, and conceptual considerations. PLOS One 14(5):e0216643. doi.org/10.1371/journal.pone.0216643
Kim H, Newman MG (2019). The paradox of relaxation training: relaxation induced anxiety and mediation effects of negative contrast sensitivity in generalized anxiety disorder and major depressive disorder. Journal of Affective Disorders 259:271–278. doi.org/10.1016/j.jad.2019.08.045
Wikipedia. Heart rate. en.wikipedia.org
Asmundson GJ, Stein MB (1994). Triggering the false suffocation alarm in panic disorder patients by using a voluntary breath-holding procedure. American Journal of Psychiatry 151(2):264–266. doi.org/10.1176/ajp.151.2.264
Wikipedia. Hyperventilation. en.wikipedia.org
Meuret AE, Wilhelm FH, Ritz T, Roth WT (2008). Feedback of end-tidal pCO2 as a therapeutic approach for panic disorder. Journal of Psychiatric Research 42(7):560–568. doi.org/10.1016/j.jpsychires.2007.06.005
Aron EN, Aron A (1997). Sensory-processing sensitivity and its relation to introversion and emotionality. Journal of Personality and Social Psychology 73(2):345–368. doi.org/10.1037/0022-3514.73.2.345
Ellis BJ, Essex MJ, Boyce WT (2005). Biological sensitivity to context: II. Empirical explorations of an evolutionary-developmental theory. Development and Psychopathology 17(2):303–328. doi.org/10.1017/S0954579405050157
Taylor SE, Klein LC, Lewis BP, Gruenewald TL, Gurung RAR, Updegraff JA (2000). Biobehavioral responses to stress in females: tend-and-befriend, not fight-or-flight. Psychological Review 107(3):411–429. doi.org/10.1037/0033-295X.107.3.411
Allen KM, Blascovich J, Tomaka J, Kelsey RM (1991). Presence of human friends and pet dogs as moderators of autonomic responses to stress in women. Journal of Personality and Social Psychology 61(4):582–589. doi.org/10.1037/0022-3514.61.4.582
Coan JA, Schaefer HS, Davidson RJ (2006). Lending a hand: social regulation of the neural response to threat. Psychological Science 17(12):1032–1039. doi.org/10.1111/j.1467-9280.2006.01832.x
Grossman P (2023). Fundamental challenges and likely refutations of the five basic premises of the polyvagal theory. Biological Psychology 180:108589. doi.org/10.1016/j.biopsycho.2023.108589
Šrámek P, Šimečková M, Janský L, Šavlíková J, Vybíral S (2000). Human physiological responses to immersion into water of different temperatures. European Journal of Applied Physiology 81(5):436–442. doi.org/10.1007/s004210050065
Barwood MJ, Eglin C, Hills SP, et al. (2024). Habituation of the cold shock response: a systematic review and meta-analysis. Journal of Thermal Biology 119:103775. doi.org/10.1016/j.jtherbio.2023.103775
Ekholm B, Spulber S, Adler M (2020). A randomized controlled study of weighted chain blankets for insomnia in psychiatric disorders. Journal of Clinical Sleep Medicine 16(9):1567–1577. doi.org/10.5664/jcsm.8636
Ulrich RS (1984). View through a window may influence recovery from surgery. Science 224(4647):420–421. doi.org/10.1126/science.6143402
Bratman GN, Hamilton JP, Hahn KS, Daily GC, Gross JJ (2015). Nature experience reduces rumination and subgenual prefrontal cortex activation. Proceedings of the National Academy of Sciences 112(28):8567–8572. doi.org/10.1073/pnas.1510459112
Vilarim MM, Rocha Araujo DM, Nardi AE (2011). Caffeine challenge test and panic disorder: a systematic literature review. Expert Review of Neurotherapeutics 11(8):1185–1195. doi.org/10.1586/ern.11.83
Ben Simon E, Rossi A, Harvey AG, Walker MP (2020). Overanxious and underslept. Nature Human Behaviour 4(1):100–110. doi.org/10.1038/s41562-019-0754-8
Wikipedia. Allostatic load. en.wikipedia.org
Wikipedia. Interoception. en.wikipedia.org