Thank you for notifying me of this procedure. It is unlike uddiyana bandha (stomach lock) and agnisar dhouti (cleansing the digestive fire) . Both of these yoga techniques are done with breath retention (kumbhaka), while this method is done with regular breathing. To clarify, agnisar dhouti is a variation of the classical hatha yoga method called six cleansing actions (shatkarma kriyas). It is done by exhaling and pausing the breath for a naturally comfortable period. While retention is done then the middle abdomen is pulled in and relaxed repetively to one’s capacity. With a resolution to increase the agni and visualization on the fire getting hotter it increased digestive strength thus lessening appetite and in some cases may assist in weight loss.
As a progression from this stage one can practice Uddiyana bandha, done with a continuous pull backward and upward to lift the lower ribs and widen then through the control of the diaphragm. It is an exercise for heart muscle and for diaphragm stamina. The next step would be to do bastrika pranayama, done by strong abdominal contractions with each exhalation. When given by an experienced teacher initated into Shaktipat or Tantrik meditation, it can be used to increase shakti kundalini.
Shakti is most increased by intention, devotion, and improved concentration. It is the energy of the Divine within the human body and with practice is seen to be in all of Her creation. Primarily it is increased by regular sadhana and drawing Her to you in whatever form you experience Her most - as a flower, energy of prana, a specific deity, or from being in the company of your teacher.
In the case of this practice agnisar can be increased to cycles of 30 pumps interspersed with 3-6 rounds of ujjaye pranayama. The number is to be gradually increased to 9 rounds though the intention is to find the Shakti as you do the practice. In this manner Shakti can be found sooner so less rounds are needed. In advanced practice less technique is needed and more direct experience is coming thus producing a naturally arising meditative state. With time the state becomes how you experience the world, you walk eat and sleep in meditation experiencing the Shakti all the time. When the experience passes then sadhana is appropriate. Just as when we take a trip we get out of the car when we arrive at our destination. In the same way no method is needed when we arrive at our true home as Shakti.