Consciousness is like a multi-storey building. Everyday awareness is akin to one of the floors. When we’re on that level, we can see only what’s on that floor. To find out what’s on the other floors, we have to change to another level of consciousness. Regression provides a stairway between the floors. It always begins with relaxation techniques to slow down the brainwaves. To do this, the therapist will talk in a calm, slow voice. They will often use images of soothing scenery and physical relaxation. Repetition and counting down also work well. But all of this only works if the person is willing. If someone doesn’t want to be relaxed, then nothing can force them into it. As our brainwaves slow down, our consciousness changes. This is how we move to the other levels. In the grand structure of our psyche, there are four main levels of consciousness: beta, alpha, theta and delta. They each have their own light, medium and deep levels. We go in and out of all of them every day and night as we move between waking, working, relaxing and sleeping. We know this because these different states have been researched and measured using electroencephalograms – EEGs for short. Our brainwaves produce an electrical impulse and, to trace it, sensors are placed on people’s heads, connecting them to EEG monitors. A wavy line on a graph then reflects their changing levels of consciousness. As they relax, so does the line on the graph, which becomes softer and smoother the deeper they go.