Sit cross-legged with eyes closed. Rotate tongue until you get a mouthful of saliva, or the divine water. Gargle with it 36 times before swallowing it in three gulps. Make sounds when you swallow it and imagine that you are sending it down into Dantian at lower abdomen. Return to the starting position and repeat the whole process three times.

This excise may regulat and coordinate all the channels in the body.