I recently completed a meditation course offered by Brahma Kumari center. It was a wonderful experience to go through the meditation process.
It really helped to differentiate between Bhakti, meditation, penance and gyan Marg. My reasons of going through various processes is 
to understand their impact on our mind and how it can bring change within us. Yes I found this to be really calming and relaxing. I guess that is what people want in today’s stressful life.
Brahma kumari has 9000 centers across the world. Presence in more than 100 countries. Silent but dedicated work towards humanity.
The theory is bit different from our scriptures but still have adapted a lot from Hindu belief system. Though they don’t identify themselves as religious organisation. It is more of a spiritual center to uplift our soul and cleanse our karma.