When you go into trance, you will not become paralyzed in the head- the feeling of numbness (or rather, the signals made to paralyze you) only affect your arms and legs, so that your parasympathetic system continues working and you breathe, etc. So do not expect to 'feel' trance in your head- in fact, after doing your energy raising and basic breathing exercises, you should not continue to monitor your body at all, and switch your focus on what you observe, hear, and feel in a passive way. Even when you do energy body loosening, you should approach it as if things are happening around you- if you do 'bouncing' loosening, you feel yourself being hurtled back and forth, or feel the room getting smaller and bigger (balloon method), etc- but do not continue 'feeling' for body cues, because that just anchors your conscious awareness on your body, when what you are doing is the opposite of that.