Some what weirded out rn... I've been able to do this since I was a child and I am now 32. It's almost like flexing something inside which creates a buzzing electric "feeling" right below my chest and can expand and become more intended the more "it" is "flexed". Meditative state not required and only happens when I initiated it. I can only do it briefly bc my heart and muscles start to feel odd/strained. Thought I was the only one! There has to be some commonality between our experiences.
WesThorn