Don't lock your knees, elbows or joints into position. Maintain a curvature of limbs. Look forward, but don't fixate on any particular spot. Vision is alert and relaxed, or eyes are closed. Breathe naturally through your nose.
Breathing is soft, relaxed, even, continuous and from the diaphragm.
Each cycle should take from 30-60 seconds. Close your mouth and let your tongue touch the roof of the mouth. This forms a connection between vessel meridians and completes a primary circulation of chi energy called the microcosmic orbit. Relax your body and empty your mind.