The more I practice body awareness the more I can sense the subtle vibrations or blood in my body. It seems where ever I place my attention in the body, the blood or vibrations get stronger.  
  
Now if I place all my attention on my head, I feel a big pressure build up.  
  
Is the pressure a sign of energy imbalance or doesn't mean anything? 
  
I have recently bought the book "Taoist Yoga - Alchemy and Immortality", and am familiarizing myself with the mini and microcosmic orbit.  
  
So my question in relation to the microcosmic orbit is, should I but pushing that pressure down the front channel to complete the microcosmic orbit?