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Evidence-based calm

Calm your nervous system with tools that show their science.

Breathing protocols, thought reframing and stress habits for anxious, busy minds. Every technique is linked to the study behind it, with its design, size and honest evidence grade.

42 peer-reviewed sources, DOI-verified Your entries stay on your device No sign-up needed
ReadyCYCLIC SIGHING
The Evidence Engine

No claim without a verified source

Wellness content is full of confident advice with nothing behind it. We work the other way round: we start from the research, and every page shows you exactly what was studied.

  1. Find the study

    We search PubMed for meta-analyses, systematic reviews and randomized trials.

  2. Verify the DOI

    Every DOI is checked against Crossref daily. If the title doesn’t match, the source is rejected.

  3. Read the abstract

    Design, sample size and findings come from the abstract itself, never from memory.

  4. Grade it honestly

    A for strong, B for moderate, C for preliminary. We show weak evidence as weak.

Example citation card

RCT
In a remote randomized controlled study, 5 minutes a day of exhale-focused cyclic sighing for a month improved mood and lowered respiratory rate more than mindfulness meditation.
Balban MY, et al. (2023). Brief structured respiration practices enhance mood and reduce physiological arousal. Cell Reports Medicine. DOI PubMed ✓ Verified via Crossref · Oct 24, 2026
Meta-analysis 24 studies · 484 participants
HRV biofeedback training was associated with a large reduction in self-reported stress and anxiety (between-group Hedges' g = 0.83).
Goessl VC, Curtiss JE, Hofmann SG (2017). The effect of heart rate variability biofeedback training on stress and anxiety: a meta-analysis. Psychological Medicine. DOI PubMed ✓ Verified via Crossref · Oct 24, 2026
Evidence Matrix preview

What actually helps with stress? Graded.

Some popular habits have strong research behind them. Others are promising but thin. Here’s a sample — the full matrix has 24 habits with every source.

A

Aerobic exercise

Regular aerobic exercise reduced anxiety in two meta-analyses, with moderate effects.

Strong evidence2 verified sources
Movement
A

Resonance breathing (~6 breaths/min)

HRV biofeedback built on slow resonance breathing showed large reductions in self-reported stress and anxiety.

Strong evidence3 verified sources
Breathing
B

Cyclic sighing

Daily exhale-focused breathing improved mood and lowered breathing rate more than mindfulness meditation in a 1-month RCT.

Moderate evidence1 verified source
Breathing
B

Caffeine cut-off 6+ hours before bed

Caffeine 6 hours before bed still disrupted sleep; high doses can provoke anxiety in sensitive people.

Moderate evidence2 verified sources
Sleep
C

Magnesium

Suggestive benefit in anxiety-vulnerable groups, but poor-quality evidence.

Preliminary evidence1 verified source
Supplements
C

Cold-water immersion

One small study found more positive affect and less nervousness after a 5-minute cold dip. Anxiety itself was not studied.

Preliminary evidence1 verified source
Exposure

See all 24 habits and sources

Private by design

Your journal, sessions and self-checks are stored in your browser, not on our servers. There is nothing for us to sell or leak.

Education, not treatment

We teach skills drawn from research, like slow breathing and cognitive reframing. We never diagnose, and we point you to professionals when it matters.

Honest about uncertainty

Supplements and cold plunges get a C when the evidence is thin. You deserve to know the difference between “proven” and “popular”.

Free guide & newsletter

The Sunday Calm Science Review

Start with the free Calm Starter Guide and four weekly lessons. Then follow the Sunday Calm Science Review for research in plain English, practical ideas and the limits of the evidence.

Example issue
New study. Does 5 minutes of breathwork beat meditation? What a 1-month randomized trial found, and what it didn’t test.
Try this week. Two minutes of cyclic sighing before your first email of the day.
Myth check. “Magnesium cures anxiety.” Evidence grade: C. Here’s why.
Questions

Straight answers

Is EasyBreezyMind therapy?
No. EasyBreezyMind is educational. We explain what research says about stress and anxiety and offer self-guided exercises. We don’t diagnose, treat or provide counselling. If anxiety is affecting your daily life, a doctor or licensed therapist can help in ways a website can’t.
How do you decide what counts as evidence?
Every claim links to a peer-reviewed paper. Before a source appears, we confirm its DOI on Crossref and check that the title matches, then read the PubMed abstract for study design and sample size. Each habit gets an A, B or C grade based on the type and consistency of studies. Our full method is on the Evidence page.
Where is my journal and self-check data stored?
Only in your own browser. Thought reframes, breathing sessions and self-check results never reach our servers. Clearing your browser data deletes them, and you can wipe or copy them from My Calm at any time.
What is the physiological sigh?
A breathing pattern with two inhales through the nose followed by a long exhale through the mouth. Repeating it for five minutes is called cyclic sighing. In a 2023 randomized study published in Cell Reports Medicine, daily cyclic sighing improved mood and lowered breathing rate more than mindfulness meditation.
Is the self-check a test for anxiety disorder?
No. It’s a reflection tool written in our own words. It can show how loaded your system feels and how that changes over time, but it can’t tell you whether you have any condition. Only a qualified professional can make a diagnosis.
Is it free?
The free tools, the article library and the weekly newsletter are free. Paid plans with guided audio programs and deeper study breakdowns are coming soon — join the waitlist on the pricing page.