A traditional method of tantra is to use a special T-shaped crutch. In Hindi it is called a kubadi. The crutch is designed so that when a person is in a sitting position on the floor, the horizontal beam rests firmly under and supports the armpit with the bottom of the vertical pillar on the ground. It is usually made of wood, and if you are sufficiently interested then you can easily make one for yourself if you have a rudimentary knowledge of carpentry.
The yoga danda is used as follows:
- If the left nostril flow is predominating, then the crutch is placed under the left armpit. This will pressurize that armpit and produce the same results explained in technique 1. In this case, after a short time, the right flow will become greater.
- If the right nostril flow is predominating, then the crutch is obviously placed under the right armpit to induce a greater flow of the left nostril.
- When one feels that the flows are reasonably equal, then the crutch can be placed in front of the body. Both elbows can be rested on the horizontal beam, with the arms folded or in any other suitable position. This will tend to induce perfect balance of the ida and pingala air flows for the following pranayama or meditational practices.
This practice is really a refinement of the padadhirasana (described in technique 1). In padadhirasana there is a tendency for the arms to become tired after a short period of time. The yoga danda can be utilized to bring about the same results for a long period of time without any tendency to become fatigued.