Days in complete darkness: What it's like to visit an underground retreat in Quebec

Would you spend up to $1,200 to stay in absolute darkness for three to seven days? That's the invitation from a meditation teacher and personal growth entrepreneur in Quebec's Eastern Townships.
It's an increasingly popular practice with little supervision, and experts warn of potential health risks.
Noovo Info reporter Béatrice Roy-Brunet went to the retreat to try the practice and report on her experience. The French-;anguage news outlet granted the retreat's owner anonymity.
Followers of the practice praise the benefits of isolating in the dark: "bursts of creativity," "significant healings," and "unforgettable psychic experiences."
The practice is slowly taking root in Quebec, with a handful of darkrooms operating in and around Montreal. Elsewhere in the world, however, it has been gaining in popularity for several years.
In the Czech Republic, psychologist Marek Malus has been investigating the potential benefits of darkness since 2011.
According to him, "a 24-hour stay is sufficient to relieve stimulus overload, to improve memory as well as cognitive and behavioural flexibility."
A stint in the dark could also boost self-esteem, reduce anxious or depressive experiences or even improve physical fitness, said the researcher.
DIVE INTO DARKNESS
Roy-Brunet describes her first impression of the retreat as a small underground cave.
She was shown to a small chamber with a bed, where she would spend the next 24 hours in total darkness.
The initial aim was to complete the full multi-day experience, but that plan was scaled back in light of information from health experts, Roy-Brunet reports.
"The humidity is palpable as you walk through the door. A dry toilet is located in the entrance corridor. A strong smell of urine emanates from it. I was also provided with a lunch box, the contents of which I would discover in the dark," said Roy-Brunet.
With her cell phone taken away, there was no way of contacting the outside world from inside the concrete room.
There was one light, which Roy-Brunet says she turned on occasionally to control her fear.
"As I tried to sleep through my experiment, green shapes seemed to come to life under my eyelids, preventing me from relaxing. I think I even saw a shadow moving towards me at high speed," she said.
The retreat does not have the required permits to operate, according to the municipality where it's located.
Noovo Info reporter Beatrice Roy-Brunet spent hours in complete darkness at a retreat in Quebec's Eastern Townships. (Source: Noovo Info)
HALLUCINATIONS AND ANXIETY
These hallucinations are part of a well-known mechanism in cognitive neuroscience, explains Dave Saint-Amour, a professor in the department of psychology at the Université du Québec à Montréal and co-founder of UQAM's research centre on cognitive neuroscience.
Essentially, the brain adapts to the suppression of visual information. "The consequence of this is that there will be an increase in activity in the visual cortex, even in the absence of vision," he continues.
This increase in brain activity can be interpreted as the cause of a real object. In total darkness, it's a hallucination.
"Hallucinations are generally positive or neutral. Sometimes, they can be negative," he said.
While the experience does not have a long-term effect, the hallucinations increased Roy-Brunet's discomfort in the dark.
"During my few hours of isolation, I felt anxious, which is not usual for me. I hadn't been informed of this possibility by the organizers," she reported.
For Dr. Christine Grou, clinical psychologist and president of Quebec's Order of Psychologists, this type of retreat carries risks for the psychological health of participants and should raise "red flags."
"For some people, it can even lead to hallucinations or more serious behavioural disorganization," she notes.
Even Czech researcher Marek Malůš asserts those offering such services must be well-trained to handle potential reactions from participants.
He cites studies that suggest traumatic or repressed experiences can resurface in such a context. Full training in psychotherapy would therefore be necessary, in his view, to avoid re-traumatization.
EXPERIENCE IS FOR 'INFORMED PUBLIC': OWNER
In light of this information, Noovo Info contacted the owner to present the doubts raised by the experts.
The owner says he was not trained in psychotherapy.
"I've been a meditation teacher for 20 years. I still understand this kind of process, often more than someone who has been trained in a university," he said.
He also argues that it's not an experience offered to the general public. Yet a Facebook page exists, and a simple Google search leads directly to the place's website.
"It's for an informed public," he replies. Maybe it's a subject I have to keep even more discreet."
- With files from Noovo Info's Béatrice Roy-Brunet
CTVNews.ca Top Stories

Two Canadian citizens confirmed dead in Antigua: Global Affairs
Global Affairs Canada has confirmed the death of two Canadian citizens in Antigua and Barbuda, news that comes amid reports from local officials that a woman and child drowned last week at Devil’s Bridge.
Montreal Mayor Valerie Plante collapses during press conference
Montreal Mayor Valérie Plante is 'doing well' but will reduce the pace of her activities over the next few days after collapsing during a press conference at City Hall on Tuesday morning.
opinion Tom Mulcair: Poilievre keeps scoring into the Liberals' empty net
In his column for CTVNews.ca, former NDP leader Tom Mulcair says Pierre Poilievre's new 'Housing Hell' video dealt a 'devastating' blow to Prime Minister Justin Trudeau and his Liberals, whose cupboard seems empty of big ideas.
Here is Canada's unseasonably mild December forecast
December is predicted to be unseasonably mild across Canada, thanks to a "moderate-to-strong" El Nino and human-caused warming. Warming and precipitation trends will be stronger in some parts of the country than others, and severe weather is still possible, meteorologists say.
Israel moves into Gaza's second-largest city and intensifies strikes in bloody new phase of the war
Israel said Tuesday that its troops had entered Gaza's second-largest city as intensified bombardment sent streams of ambulances and cars racing to hospitals with wounded and dead Palestinians, including children, in a bloody new phase of the war.
Financial intel agency hands down $7.4M penalty to Royal Bank of Canada
Canada's financial intelligence agency has levied a $7.4-million penalty against the Royal Bank of Canada for non-compliance with anti-money laundering and terrorist financing measures.
2 patients die in ER waiting room of hospital on Montreal's South Shore
An investigation is underway after two people died while waiting in the emergency room at Anna-Laberge Hospital.
Candidates vying for top job at Assembly of First Nations make final plea to assembly
Hundreds of delegates listened intently Tuesday as the slate of candidates vying to take over leadership of the Assembly of First Nations pleaded their case one final time before the assembly decides their fate.
Canadian 15-year-old students' math scores have been dipping since 2003: study
Most 15-year-old students in Canada met the basic standards for math and the country was among the top 10 performers in the tests, though scores have been dropping since 2003, according to a new global report.