Aerobic exercise
Regular aerobic exercise reduced anxiety in two meta-analyses, with moderate effects.
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.
How do you feel now?
Use them when your chest is tight before a meeting, when your mind won’t switch off at night, or when you want to know which habits are actually worth your time.
Find a fair response to a difficult moment, then choose one small act of care.
Choose a realistic wish, notice the obstacle and write a specific if–then response.
Slow your breath with a visual pacer. Cyclic sighing, resonance and box breathing.
Catch an anxious thought, name the distortion, write a more balanced one.
What actually helps with stress? 17 habits graded by study strength.
A private 2-minute reflection on how loaded your system feels.
A guided tense-and-release session for the whole body. Strong evidence.
Park a worry now, deal with it in a daily 15-minute window.
A timed, private writing session with research-based prompts.
When should your last coffee be? Calculate it from your bedtime.
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.
We search PubMed for meta-analyses, systematic reviews and randomized trials.
Every DOI is checked against Crossref daily. If the title doesn’t match, the source is rejected.
Design, sample size and findings come from the abstract itself, never from memory.
A for strong, B for moderate, C for preliminary. We show weak evidence as weak.
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.
HRV biofeedback training was associated with a large reduction in self-reported stress and anxiety (between-group Hedges' g = 0.83).
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.
Regular aerobic exercise reduced anxiety in two meta-analyses, with moderate effects.
HRV biofeedback built on slow resonance breathing showed large reductions in self-reported stress and anxiety.
Daily exhale-focused breathing improved mood and lowered breathing rate more than mindfulness meditation in a 1-month RCT.
Caffeine 6 hours before bed still disrupted sleep; high doses can provoke anxiety in sensitive people.
Suggestive benefit in anxiety-vulnerable groups, but poor-quality evidence.
One small study found more positive affect and less nervousness after a 5-minute cold dip. Anxiety itself was not studied.
Your journal, sessions and self-checks are stored in your browser, not on our servers. There is nothing for us to sell or leak.
We teach skills drawn from research, like slow breathing and cognitive reframing. We never diagnose, and we point you to professionals when it matters.
Supplements and cold plunges get a C when the evidence is thin. You deserve to know the difference between “proven” and “popular”.
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.