How Effective Is Yoga for Stress Relief?
Est. read time: 6 min
"Does yoga actually reduce stress, or is it just a nice hour off the clock?" is a fair question, and it's one the research has gotten a lot more precise about answering in the last few years. The short version: yes — and yoga specifically, not just "exercise in general," shows up as one of the more effective options.
What the research shows
A 2025 systematic review and network meta-analysis pooled 44 studies comparing different forms of exercise on cortisol — the body's primary stress hormone — in adults experiencing psychological distress. Yoga produced the largest cortisol reduction of any modality tested, ahead of qigong and general multicomponent exercise, with the yoga-versus-control comparisons backed by the strongest quality of evidence in the whole review.<sup>1</sup> Interestingly, high-intensity interval training showed no such benefit — a reminder that "more intense" doesn't mean "more effective" when the goal is stress reduction specifically.
An earlier, widely-cited meta-analysis in Psychoneuroendocrinology looked across yoga and mindfulness-based stress reduction studies and found consistent effects on stress-related physiological markers — cortisol, blood pressure, heart rate, and inflammatory markers — not just self-reported mood.<sup>2</sup>
Does it need to be a big commitment?
Not necessarily. A study measuring salivary cortisol before, during, and after a single one-hour yoga session found a significant drop after just one session — whether the style was a gentler stretch-based practice or a more vigorous power yoga class.<sup>3</sup> That's encouraging if you're weighing up whether occasional sessions are "worth it," but the research base is stronger for regular practice: a 2024 systematic review of yoga in stressed adults found moderate-quality evidence for improved quality of life with sustained practice, alongside lower-certainty but still positive findings for perceived stress itself.<sup>4</sup>
What about specifically at work?
If workplace stress is what you're weighing yoga against, there's a meta-analysis specifically on this: six controlled trials of workplace-based yoga interventions found a meaningfully large effect in reducing perceived stress compared with no intervention at all.<sup>5</sup> That's a big part of why corporate and team yoga sessions have become a common addition to workplace wellbeing programmes, not just an individual practice.
The physiological "why"
Yoga combines slow, controlled breathing with sustained physical postures — a combination that activates the parasympathetic nervous system, the body's "rest and digest" mode, while lowering blood pressure and heart rate at the same time. The breathing component alone increases oxygen supply in a way that supports muscle relaxation, and the mindfulness component trains awareness of stress-related thoughts before they escalate. It's this combination — physical, physiological, and cognitive — that seems to explain why yoga performs as well as it does against single-mechanism interventions.
What this means practically
None of this means yoga replaces treatment for a diagnosed anxiety disorder or clinical stress condition — it's best understood as a well-evidenced, non-pharmacological option that stacks well alongside whatever other support you already have. If you're in Wellington and curious whether it would help your specific situation, a private session is a low-pressure way to find out what actually shifts for you, rather than guessing from a class of twenty.
Sources
Systematic review and network meta-analysis of 44 RCTs on exercise modality and cortisol reduction in psychological distress, 2025 (Sports, PMC12736704).
Pascoe, M.C., Thompson, D.R. & Ski, C.F. "Yoga, mindfulness-based stress reduction and stress-related physiological measures: a meta-analysis." Psychoneuroendocrinology, 2017.
Sullivan, M. et al., Elon University — single-session yoga and salivary cortisol in young women, published via PsyPost.
Systematic review and meta-analysis of yoga's effects on stress in stressed adults, 2024 (Frontiers in Psychiatry).
Palermi, S. et al. "Effectiveness of workplace yoga interventions to reduce perceived stress in employees: A systematic review and meta-analysis," 2020.
Try it for yourself. Book a private or group yoga session in Wellington
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