Anuloma Viloma TimerA 2026 randomised waitlist controlled trial published in the Journal of Affective Disorders measured a 24 percent drop in anxiety scores across 107 adults after six weekly ninety minute online sessions of Conscious Connected Breathwork. The waitlist control group moved 1.89 points across the same window. The Cohen’s d for the breathwork arm was 1.44.
Most anxiety drug trials report Cohen’s d values between 0.3 and 0.5. That is not a small detail.
What the trial actually measured
107 adults were randomised. Half received the intervention, half were held on a waitlist for the duration of the study. Anxiety scores were measured at baseline and again after six weeks. Sessions were delivered fully online over a video platform. No travel, no studio, no in person facilitator in the same room. Participants opened a laptop on the day of their session, joined the call, did the breathing, and closed the laptop.
The baseline group mean was 43.87 on the chosen anxiety scale. The post intervention mean was 33.31. That is the 24 percent reduction in the headline. The waitlist control group moved less than two points over the same six weeks.
The published paper is here: doi.org/10.1016/j.jad.2025.20075. Press coverage at Longevity Today and Yogajala ran inside the first week of publication.
What an effect size of 1.44 means
Cohen’s d is a way of asking how big a treatment effect is, expressed as standard deviations of difference between groups. The conventional reading: 0.2 is small, 0.5 is medium, 0.8 is large. A 1.44 sits well into the “large” category. The number itself is a relative measure, not an absolute claim of cure.
The reason the comparison with drug trials matters is calibration. When SSRIs and other anxiety pharmacotherapies are tested against placebo controls, effect sizes typically come in at 0.3 to 0.5. The breathwork arm in this trial produced a Cohen’s d three to four times that benchmark, on a non pharmacological intervention with no side effect profile to manage. The mechanism is different. The comparison is structural, not equivalence.
A few caveats worth naming. Six weeks is short. n equals 107 is modest. Waitlist control is not the same as a sham comparator, because the waitlist participants know they are not yet receiving the treatment. These limitations are present in the paper. They do not erase the magnitude.
Conscious Connected Breathwork is not Anuloma Viloma
The technique studied in this trial is activating, not rhythmic. Conscious Connected Breathwork is a deep continuous pattern that hyperventilates and then resolves, with documented links to altered states and a structured emotional release sequence. The mechanism is mostly about chemical and emotional state change driven by sustained CO2 shifts.
Anuloma Viloma is the opposite category. It is slow, rhythmic, parasympathetic. The four to seven to eight to four cadence (or whatever ratio the practitioner uses) is built to settle the autonomic system, not to activate it. The mechanism is mostly about vagal tone and baroreflex sensitivity.
Why is the trial still relevant if the technique is different. Because the published evidence base for breath as a clinical lever just got materially stronger. Six weeks of any form of structured breath protocol, delivered online with no facilitator in the room, moved an anxiety score by 24 percent in a randomised trial. The breathwork category as a whole became more defensible this year. Anuloma Viloma sits inside that category at the slow rhythmic end.
The parallel effect size from rhythmic alternate nostril breathing has been measured separately. A 2025 study in Applied Psychophysiology and Biofeedback measured HRV shifts in 40 healthy adults after one 15 minute session of Nadi Shuddhi pranayama. A 2025 trial in the Indian Heart Journal measured blood pressure reductions in hypertensive adults across three months of the same practice as adjunct therapy. The mechanisms differ from the CCB study above. The pattern of structured breath as a measurable clinical lever holds.
The online delivery angle
The other interesting thing about the 2026 trial is the delivery channel. Online. Six ninety minute sessions over six weeks. No studio. No facilitator in the room.
For the wellness industry, this is a structural shift. The premium breathwork offering has always been a studio session with a trained practitioner. The trial says that a video call works. Whatever the breath itself is doing, the room is not the active ingredient.
For the user with a quiet morning window and a willingness to set a timer, the conclusion sharpens further. The studio model justifies a price tag. A timer on a phone does not.
The minimum useful version
If you want to start without a trial protocol, the minimum useful version of slow rhythmic breathing is honest. Sit, set a timer for five to ten minutes, breathe in through one nostril, out through the other, on a count you can sustain. The rhythm is the point. The nostril alternation is the point.
Anuloma Viloma Timer is free on the App Store. No subscription necessary. Apple Watch standalone, customisable ratios, no upsells. If the 2026 trial is part of what convinced you to try, the timer is the cheapest possible way to test whether your own nervous system responds.