I don't understand why we talk about chakra, kundalini, though those experiences have been felt during a Vipassana retreat. I think those should have been understood in the way of vipassana. There is no chakra in vipassana, no kundalini. But moments of heat, movement, vibrations, etc can be experimented. When it is so, it should be noticed AS IT IS, and not gathered in a concept like chakra or kundalini experience...
When we follow a method, we should follow its instructions precisely, and not interpret an experience by using concepts from other methods. Otherwise, it's like climbing a mountain by taking one path, then quickly go down to take another path, then go down again... Doing like this will not lead us to reach the goal...
With metta
Hoshin

