For the world-weary soldier in the battle of life, switching off is no longer just about taking off on a holiday somewhere quiet.

A form of meditation dating back more than 2,500 years is giving many people more than quietude in return for renouncing total contact with the world outside for 10 days. Think no appointments, no mobile phone to check every few seconds, no breaking news to despair over.

More than 300 participants were on Sunday introduced to a breathing technique designed to build the concentration required for meditation at a session called Introduction to Vipassana Meditation, in association with The Telegraph.

The session was a prelude to a 10-day course that is taught at 170 centres across 90 countries, including one in Sodepur on the northern fringe of Calcutta.

Vipassana students not only have to avoid contact with the outside world but are also barred from speaking to each other when they attend meditation sessions from 4.30am to 9pm with small breaks in between.

“It is only on the last day that any conversation is allowed so that the participants come out of the shell that they got into during the previous nine days,” said Dipak Kamdar, trustee of the Vipassana Kendra, Calcutta.

Kamdar, who had first attended the course in Sodepur in the 1990s as a 33-year-old, credits Vipassana with changing his life. “The benefits are many. Your breadth of vision increases and anger decreases. You also tend to be able to take the right decisions. My business has grown manifold since I did the course.”

A class of about 30 students, old and new, attend two courses every month at the Sodepur centre.

The 90-minute programme on Sunday had two 10-minute sessions of meditation. As the lights dimmed, the participants were asked to sit up straight, close their eyes and concentrate on their own breathing and the involuntary nature of the process.

“The body and mind are intrinsically connected. When we get upset or angry, or when we tell lies, our breathing becomes heavy. So, calmness is linked to relaxed, slow breathing. In Vipassana, we try to become conscious of our breathing, of air entering and leaving our nostrils. But we do not try to regulate it and this help us calm down and feel relaxed,” said thought leader and investment banker Vallabh Bhanshali from Mumbai, who conducted the session.

The 10 day-course expands the scope of self-realisation through more meditation techniques.

“Vipassana is the name given to a form of meditation that was rediscovered by Gautam Buddha and is the essence of what he practised and taught during his 45-year ministry. Five centuries later, interest in Vipassana, which had disappeared from India, was stoked in 1955 by S.N. Goenka, a person of Indian origin living in Burma,” Kamdar said.

Goenka had learnt the techniques from a monk in Burma, where the heritage of Vipassana has been preserved by devoted teachers.

Rittika Chokani, who works in a private company, made up her mind to do the 10 day-course after her initiation on Sunday. “I liked the calming affect of the meditation sessions today. I want to attend the full course because I get angry very quickly and would want to control it,” said Rittika, whose husband Vineet has already done the course and benefited from it.