As the child enters puberty its sexual energy awakens. If this is allowed to happen naturally, in its own time, then it first becomes apparent in dreams. The dreaming mind induces physical arousal and sometimes release. The child quickly learns that nothing compares to sexual pleasure, and begins to fantasise – effectively dreaming whilst awake – to produce the same affects. This is using the conscious mind to arouse the body, and sometimes it won't work, because of tiredness or distraction or anxiety, and the mind just cannot get into the body. This is exactly the sort of imagination we need to exercise to get into energy. A physical imagination that arouses not sexual energy but qi or spirit, or whatever you want to call it. Of course without the reward of sexual pleasure such an mind is far more likely to get distracted, as we all know, which is why the main thrust of our work is towards inner stillness and silence. The only way we will ever really practice it is if we begin to feel the energy moving with the mind, and if we find pleasure in that feeling.