I have come across this breakdown before a couple of times, but while reading the book, Meditation as Medicine, and seeing it again, I thought I would post it up for those who haven’t seen it.
Here is how Dharma Singh Khalsa, MD explains it:
- 3 Minutes: Increased blood circulation begins, distributing enhanced neuroendocrine secretions throughout the body.
- 7 Minutes: Brain patterns begin to shift from the static beta waves, to calmer alpha waves, and ultimately to deep-relaxation delta waves. Simultaneously, the magnetic force surrounding the body increases in strength.
- 11 Minutes: The sympathetic and parasympathetic nervous systems begin to accommodate increased energy.
- 22 Minutes: Anxiety-producing thoughts in the subconscious begin to clear.
- 31 Minutes: Endocrinological balance is achieved, as is balance of the chakras of the ethereal body. This balance persists throughout the day, and is reflected by changes in mood and behavior.
On pinklotus.org they describe the effects slightly differently and also include 62 and 150 minutes:
- 3 Minutes – Affects the electromagnetic field, the circulation and stability of the blood.
- 11 Minutes – Begins to change the nerves and the glandular system.
- 22 Minutes – Balances the three minds, and they begin to work together.
- 31 Minutes – Allows the glands, breath, and concentration to affect all the cells and rhythms of the body. It lets the psyche of the meditation affect the 3 gunas, all 31 tattvas, and all layers of the mind’s projections.
- 62 Minutes – Changes the gray matter in the brain. The subconsious “shadow mind” and the outer projection are integrated.
- 2-1/2 hours – Changes the psyche in its co-relation with the surrounding magnetic field so that the subconsious mind is held firmly in the new pattern by surrounding universal mind
In general the longer the kriya or meditation, the great the effect.
That said, be careful with over extending yourself. Longer periods of time should be built up to gradually in a sustainable way. There are also some kriyas that Yogi Bhajan suggested to not do for over certain amounts of time.