[This meditation and the accompanying illustration come from Kali Rising: Foundational Principles of Tantra for a Transforming Planet, by Rudy Ballentine. Our thanks to Rudy for permission to use this material.]
Foundational Meditation IIIA
The Breath of Union - Part One
Establish a comfortable upright position. If sitting on the floor doesn't work for you, then sit in a chair, preferably forward, toward the edge, so that you can maintain a normally erect spine (with gentle curves forward at the lower back and neck.)
[When comfortably seated, play the recorded meditation.]
[There is a pause at the end of the spoken part of the meditation. Continue meditating as long as you wish, then bring you awareness back into your room.]
Steadying your focus is a valuable skill to develop. After some days of this, the breath will begin to settle more readily into a flow that is equal on the two sides
This equal flow, the sushumna of the yogis, reflects a bilateral activation of the two hemispheres of the brain. It is the sort of state that one enters during hypnotic trance. This is a perfect mode of function for meditation.
If you like this meditation, check out Rudy's March 23-26 retreat, Tantric Awakening.