"Exercise helps anxiety" is true but not very actionable on its own — which type, and how much? A 2026 network meta-analysis set out to answer exactly that.
The evidence base
For clinically diagnosed anxiety disorders, the analysis pooled 17 RCTs and 760 participants. A wider analysis — covering both diagnosed anxiety and anxiety symptoms more broadly — pooled 29 trials and 1,372 participants.
A network meta-analysis (NMA) differs from a standard trial by pooling every direct and indirect comparison across all interventions in the literature — resistance vs. control, mind-body vs. control, aerobic vs. resistance, and so on — into one model, then ranking every option on the same scale. The authors, Lei and colleagues, published the analysis in BMJ Open Sport & Exercise Medicine in early 2026.1 Each ranking carries a probability score (SUCRA) and a GRADE certainty rating, telling you not just what came out on top but how much to trust that ranking.
What came out on top
For diagnosed anxiety disorders, resistance training produced a moderate-certainty effect size (SMD −0.79) — essentially on par with third-wave cognitive behavioural therapy (SMD −0.75) in this analysis. In the wider comparison across both diagnosed and subclinical anxiety, resistance training and mind-body exercise (yoga, tai chi) were the two strongest performers, both at moderate certainty.
The full ranking: where aerobic exercise (and everything else) placed
Most public health advice defaults to "cardio" as the anxiety-fighting exercise. This particular ranking doesn't back that up. Here's the complete order for diagnosed anxiety disorders, from strongest to weakest effect against control:
| Intervention | SMD vs. control | Certainty |
|---|---|---|
| Resistance training | −0.79 | Moderate |
| Third-wave CBT | −0.75 | Moderate |
| Mind-body exercise (yoga, tai chi) | −0.71 | Moderate |
| Standard CBT | −0.70 | Low |
| Aerobic exercise | −0.65 | Moderate |
| Multicomponent exercise | −0.58 | Low |
| Treatment as usual | −0.40 | Low |
| Stretching | −0.26 | Low |
| Placebo | +0.55 | Very low |
A few things stand out. Aerobic exercise — the default "go for a run" advice — placed fifth, behind resistance training, third-wave CBT, mind-body practice, and standard CBT, though it was still moderate-certainty and meaningfully better than doing nothing. Stretching barely separated from no treatment, and the placebo arm went the wrong direction entirely (SMD +0.55) — "waiting and hoping" isn't a neutral option for anxiety. This network also didn't isolate high-intensity interval training as its own category; HIIT protocols in the underlying trials were most likely folded into the aerobic or multicomponent groupings, so no separate HIIT ranking exists here.
Where the picture shifts
For subclinical anxiety symptoms specifically — not a diagnosed disorder — mind-body exercise ranked highest, though only at low-certainty confidence, and resistance training showed no significant effect in that narrower group. The type of exercise that helps most may depend on how severe the anxiety actually is.
Zooming into that subclinical-symptoms slice of the data (12 trials, 578 participants), the ordering was: mind-body exercise (SMD −0.84, low certainty), psychoeducation (SMD −0.65, very low certainty), resistance training (SMD −0.64, very low certainty), aerobic exercise (SMD −0.62, very low certainty), and multicomponent exercise (SMD −0.40, very low certainty).1 Resistance training's point estimate there isn't trivial — but at very low certainty, the confidence interval is wide enough that the analysis doesn't treat it as a reliable effect once anxiety drops below a diagnosable threshold. That's a genuinely different conclusion than the diagnosed-disorder ranking above, and it's the kind of nuance that gets lost when "exercise helps anxiety" gets compressed into a headline.
The exercise type that ranks highest for a diagnosed anxiety disorder is not necessarily the one that ranks highest for everyday anxious symptoms — severity changes the answer.
Why type might matter: the mechanisms
None of this happens by magic, and the trial authors point to a few candidate biological pathways — none proven as the definitive mechanism, but plausible enough to explain why different exercise types might work through different routes.
For resistance training, the leading hypotheses involve insulin-like growth factor 1 (IGF-1), released during strength training and thought to have anxiolytic effects partly by regulating FKBP5, a gene involved in how stress-hormone receptors function.1 Resistance training is also linked to hippocampal neurogenesis — new neuron growth in a region tied to stress regulation and fear memory — plus the simpler psychological route of visible strength gains improving self-efficacy and body image. A separate, well-established line of research backs part of this picture: a 2015 meta-analysis of exercise and brain-derived neurotrophic factor (BDNF), a protein that supports neuron growth and is often reduced in anxiety and depression, found exercise reliably raises BDNF, with the effect most consistent for higher-intensity and resistance-style protocols.2
Mind-body exercise appears to work through a different route: parasympathetic activation and increased GABA levels in the thalamus, alongside a possible dampening of HPA-axis (hypothalamic-pituitary-adrenal) reactivity — though the authors note the HPA-axis evidence specifically remains inconsistent.1 There's also overlap with interoceptive exposure, a well-established idea from anxiety treatment more broadly, where controlled, low-threat exposure to physical sensations (elevated heart rate, breathlessness, muscle strain) resembling anxiety symptoms helps reduce fear of those sensations over time. Yoga and tai chi pair slow, deliberate breathing with sustained postures that produce exactly this kind of signal, which may explain why they work even at low intensity (the trials averaged a gentle MET of 2.3–3.3).
How much, and how often
Knowing "resistance training helps" isn't very actionable without a dose. Across the pooled trials, the typical protocol ran roughly 43 minutes per session, three sessions a week, most commonly for about 8 weeks (individual trials ranged from 2 to 16 weeks, with a few extending toward a year).1 Around 80% of participants started out untrained, so these effects reflect beginners starting from close to zero — not athletes refining an existing programme. The sample skewed toward women (73%) with a mean age of 36, worth flagging as a limit on generalizing to older adults or men specifically. Only 12 of the 30 trials reported follow-up data beyond the intervention period, so how durable these effects are once training stops is still an open question.
What this doesn't mean
This is comparative trial evidence on exercise types, not a claim that exercise treats or replaces treatment for an anxiety disorder — a moderate-certainty SMD is a real, meaningful signal, not a guarantee for any one person. Anyone with a diagnosed anxiety disorder should treat this as one input alongside clinical care, not a substitute for it.
How this lines up with what helps depression
Proco's companion piece on exercise and depression covers a separate, much larger network meta-analysis — Noetel and colleagues, published in The BMJ in 2024, pooling 218 studies and over 14,000 participants.3 There, dance came out on top by a wide margin (SMD −0.96), ahead of walking/jogging (SMD −0.63), yoga (SMD −0.55), and strength training (SMD −0.49). That's a genuinely different leaderboard: resistance training tops the anxiety-disorder ranking above, but for depression it lands fourth, behind dance, walking, and yoga — and dance isn't even broken out as its own category in the anxiety network. Mind-body practice is the one throughline, ranking strongly in both; resistance training's standout position looks more specific to anxiety than to mood disorders generally. "Best exercise for mental health" isn't one portable answer — it depends on which outcome is being targeted.
The practical takeaway
If exercise is going into a mental health toolkit and there's a choice about what kind, the trial evidence favours resistance training and structured mind-body practice over generic "just get moving" advice — the type of exercise chosen isn't incidental to the effect. As a starting dose, something in the neighbourhood of three 40-to-45-minute sessions a week, sustained for at least 8 weeks, is roughly what generated the effect sizes above — a realistic bar for someone starting from scratch, not an elite training block.
This article is for informational purposes only and is not medical advice. It is not intended to diagnose, treat, cure, or prevent any disease, including anxiety disorders. Speak with a healthcare provider about your specific situation, especially if you have a diagnosed anxiety condition.
References
- Lei EF, Wan K-W, Dai Z, Tam BT (2026). Effectiveness and acceptability of exercise treatments for adults with anxiety disorders: a systematic review and network meta-analysis. BMJ Open Sport & Exercise Medicine, 12(1):e002781. pmc.ncbi.nlm.nih.gov/articles/PMC12820870
- Szuhany KL, Bugatti M, Otto MW (2015). A meta-analytic review of the effects of exercise on brain-derived neurotrophic factor. Journal of Psychiatric Research, 60:56-64. pubmed.ncbi.nlm.nih.gov/25455510
- Noetel M, Sanders T, Gallardo-Gómez D, et al. (2024). Effect of exercise for depression: systematic review and network meta-analysis of randomised controlled trials. The BMJ, 384:e075847. pubmed.ncbi.nlm.nih.gov/38355154
Related reading
- Exercise and Depression: What the Trials Actually Show
- The Cortisol Story Is More Complicated Than the Headlines
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