My son mentioned something about esctatic dance the other day.  I've never heard of it!
It is a free form type of dance event that is based on Gabrielle Roth's "5Rhythms" guided dance practice.
Ok, I'm still clueless.  Who is Gabrielle Roth?
She was an American dancer and musician in the world music and trance genres. She also had a special interest in shamanism. 
Well, that explains why I have never heard of it.  Is ecstatic dance popular in the United States?
I don't think so but the term "ecstatic dance" basically means sacred and transcendental dance or movement meditation.
Well, he said they did it at church youth group.  Maybe they were trying to get closer to God.  I'm not sure.
That makes sense because the events are all inclusive and all ages are welcome. It's also drug and alcohol free?