Initially in Taiji we empathise relaxation. Relaxing chronic fearful tensions that we don't realise are there because we have lived with them for so long. A teacher is needed to point out the tensions, but the Form can also be an excellent teacher if you really listen to your body as you practice it. Once you have gained a level of relaxation the next stage is instituting the correct tension – a vibrant dynamic tension from a working spirit that will give you speed and courage in the fight. For this stage (which most never get to) a qualified master is absolutely essential.