Dan tien II

The (lower) dan tien is associated with chi and the development of chi. Chi is breath, or the energy of breath and breathing. To develop the dan tien breathe into and from the belly. Then the abdomen behaves like a bladder or balloon that expands and contracts in time with the breathing. This bladder has an elastic quality: when it expands beyond a certain point then contracting tension starts to build up, and when it contracts beyond a certain point expanding tension builds up. The natural interplay of yin and yang: elasticity.