Casa Lotus Azul

Home › Blog

Silence

The Benefits of Silence: Three Days Without Speaking

By Fabiana · Published 11 August 2026 · 8 min read

The garden at Casa Lotus Azul, a path leading to the statue

Short answer — Three days of silence produce effects that participants describe in almost identical terms: sleep lengthens, the taste of food returns, and the inner noise settles around the second or third day. On the research side, a meta-analysis covering 2,912 participants finds moderate to large effects of meditation retreats on anxiety, depression and stress — while noting that the methodological quality of the studies is uneven. What silence does not do: cure, heal, or resolve anything that requires medical care.

"Three days without speaking — what's the point?" It is the question that comes up most often, and it is a fair one.

Most articles answer it with a list of wonderful effects, without ever saying where the list comes from. We are going to do it differently: separate what participants report, what research has actually measured, and what nobody has demonstrated.

Including where the honest answer is "we don't know."

What participants report

These are observations, not measurements. They recur with striking consistency from one retreat to the next.

Sleep lengthens. This is the most universally described effect. With no screens, no evening conversation and no coffee after midday, tiredness arrives naturally around nine. Many sleep nine or ten hours on the first night, something they have not done in years.

Taste comes back. Eating without speaking changes the meal entirely. You chew more slowly, you distinguish the ingredients, you stop when you are no longer hungry. Several participants describe this as the most striking surprise of the early days — and one of the few they carry home.

The inner noise settles. For the first two days the mind protests: it makes lists, replays conversations, gets bored. Then something comes to rest, usually on the second or third day. It is not emptiness; it is more that thoughts stop demanding an immediate answer.

You see other people more clearly. Without verbal exchange, attention shifts to gestures, rhythms, presences. Many describe an unexpected closeness with people they have not said a word to.

Speech changes on the way out. On the last day, when the silence lifts, the first exchanges are often slow and careful. Some say they speak less in the weeks that follow, and listen more.

What the research says

What has been measured

Meditation retreats — silent retreats among them — were the subject of a meta-analysis published in 2017 in the Journal of Psychosomatic Research, covering 21 studies and 2,912 participants.

The finding: a moderate effect across psychological measures, with a Hedges' g of 0.45 pre-post and 0.49 against control groups. The authors report large effects on anxiety, depression and stress, and moderate effects on emotional regulation and quality of life. Results held at follow-up.

A more recent review devoted specifically to Vipassana meditation reaches converging conclusions, noting that effects appear proportional to the intensity of practice.

But the same authors are explicit about the limits. Many of the studies reviewed lack methodological rigour: small samples, no control group or blinding, participants who are usually volunteers and already convinced. A moderate effect measured under those conditions does not transfer mechanically to your own case.

The study everyone quotes wrongly

You will often come across, on sites devoted to retreats, a reference to a 2013 study showing that silence generates new neurons in the hippocampus.

The study exists. It is called Is silence golden?, published by Imke Kirste and colleagues in Brain Structure and Function. But it was carried out on mice, not on human beings.

The protocol compared several sound environments: the background noise of the animal facility, white noise, pup calls, and piano music. Silence was not even the main object of the experiment — it was the control condition. The result surprised the researchers themselves.

Nothing in that work supports the claim that three days without speaking would grow neurons in an adult human. It is the kind of shortcut that discredits a subject which does not need it.

What has not been demonstrated

Silence does not treat depression. It does not treat anxiety in the medical sense. It replaces neither psychological care nor medication.

No serious study claims otherwise, and a venue that says so is going well beyond what is known.

Why three days and not two

Three days recurs everywhere as the minimum, and it is not arbitrary.

The first day is spent arriving: the body is still in the journey, the mind still in unfinished business. The second is often the most uncomfortable — restlessness peaks and you wonder what you are doing there. It is usually during the third that something settles.

A two-day retreat therefore stops just before the interesting part. This is why most serious venues do not offer anything shorter, even when there is demand for it.

At the other end, ten-day formats such as Vipassana belong to a different register: ten hours of daily meditation, total silence, no reading. It is not the same experience made longer; it is a different experience.

What sometimes surfaces

It would be dishonest to speak only of rest.

Silence removes the distractions that usually hold certain things at arm's length. So it happens that an old sadness, an anger, or a decision long postponed comes up over those three days.

This is not a mishap: it is often what people came for. But it explains why guidance matters so much, and why we advise against unsupervised silent retreats for a first experience.

Research on meditation programmes documents these difficult experiences. A study published in 2021 in Clinical Psychological Science reports that 83% of participants in an eight-week mindfulness programme experienced at least one side effect, with 37% reporting an impact on their daily functioning. These experiences are more frequent among people with a history of mental health difficulties.

If you are going through a recent bereavement, a separation still raw, or a period of psychological fragility, speak to a health professional before booking. Silence invents nothing, but it amplifies what is already there.

What stays, once home

This is the question nobody asks beforehand, and everybody asks afterwards.

The most lasting effects are not the most spectacular. What participants report weeks later comes down to three things: they sleep better, they eat more slowly, and they tolerate constant background noise far less — the radio on for nothing, the television running behind everything, the phone within reach.

Calm itself does not travel home in a suitcase. What does travel is having seen that it exists, and knowing a little better how to find your way back to it.

Many describe the return as harder than the retreat. If you can, leave a buffer day before going back to work.

Our "Return to Self" retreat

At Casa Lotus Azul the retreat runs three days, in a group of no more than eight, in the heart of the Minho — twenty minutes from Braga and on the edge of the Peneda-Gerês national park.

Two guided meditations a day, morning and evening. Time together and time alone. Plant-based cooking drawn from the kitchen garden. The silence practised is noble silence: participants do not speak to one another, but you can always speak to Fabiana, who has been accompanying retreats for twenty-seven years.

There is no fixed programme, and that is deliberate: the shape of the days adjusts to the people present.

€360 per person, all inclusive.

Frequently asked questions

Is three days really enough to feel anything? Yes, provided they are three full days. The shift most participants describe happens on the second or third day. A two-day retreat generally stops just before it.

Does silence really reduce stress? Studies of meditation retreats observe effects on measures of anxiety and stress, of moderate size. They rest, however, on often small samples and volunteer participants. These are observed tendencies, not an individual guarantee.

Does silence grow new neurons? No, this has never been shown in human beings. The study frequently cited on this point was carried out on mice, in 2013, and silence was the control condition.

Will I be bored? For the first two days, probably. It is a stage most participants pass through. Boredom is what remains when distractions stop, and it often precedes what settles afterwards.

Can you write during a silent retreat? It depends on the format. In noble silence, writing is generally allowed and many make use of it. In total-silence retreats such as Vipassana, it is not.

Can silence do harm? It can bring difficult things to the surface, particularly for people with a history of mental health difficulties. This is why a serious venue asks you questions before confirming your place, and why guidance is not a decorative extra.

How long do the effects last? Studies that measured at a distance observe results holding at follow-up. In terms of reported observations, the change in sleep and in the relationship with food seems to be what persists longest.

Sources

The observations reported by participants come from twenty-seven years of accompanying retreats. They do not constitute scientific evidence and are presented as such.

Last updated: 11 August 2026.

A question about how the days run, or a doubt about the timing? Write to us on WhatsApp — we answer everything, including when the answer is "not now".

This article is informative and does not replace medical advice. In case of recent bereavement, a painful separation or psychological fragility, please speak to a health professional before booking.

Also worth reading

Silent Retreat in Portugal: The Complete Guide

Our “Return to Self” retreat

Three days in noble silence, in a group of no more than eight, in the heart of the Minho. €360 per person, all inclusive.

Message us on WhatsApp
← Back to the blog