Vipassana, which means to see things as they really are, is one of India's most ancient techniques of meditation.
It was taught in India more than 2500 years ago as a universal remedy for universal ills
Group sitting guidelines
Group sittings are valuable opportunities to strengthen your practice of Vipassana. By sitting with fellow students who are following the same technique, you can meditate more seriously and gain support which will help you keep practicing on your own.
The five precepts of wholesome conduct are to be observed in the place where group sittings are held. These precepts include abstention from the following:
killing any living creatures
use of intoxicating drugs or alcohol