Kundalini exists in the form of subtle energy and can be moved up and down by utmost concentration. Let us take an example. Hold a magnet beneath a paper and spread some iron scrap over the paper. Now move the magnet, the scraps will also move along with the movement of magnet. In the same way, we can move the kundalini by focusing our entire attention on it. You can also confirm this by a simple test. Place a small sheet of paper on a table and by single pointed focus, move the paper. You will be able to move the paper after persistent practice. The paper moves on two counts. One is your will to move the paper and two when you focus on the paper your energy gets connected to the paper and because of your will to move it, it ultimately moves. It is like an electric locomotive. The locomotive can move only if it is connected to the electric energy. So when you need to move something, you have to bring some other force. Kundalini in her static form is like an electric locomotive without electricity. It needs the energy of mind to make a move.