When I watch someone doing Poi, after practicing mine I feel their Poi around me; their movement, pretty much a trance while looking at them or watching poi spinning videos.
You feel quite good after accomplishing a new move. It lifts your sorrow away and you feel excited afterward.
To free your mind, you must free your body. Through your soul you can accomplish anything.
Around you feels lighter, like an unknown foreigner. Then slowly but unlike it, you come back normally as yourself.
In Poi, you're not alone. You are with friends. Friends that do Poi just like you. It's a way to open up yourself to others.
I don't know. Maybe they have some Autism. They are just friends. Ask them.