I now breathe at a rate of 1 breath per 4 seconds which works at to about 540 breaths for my current 36 minute 30 second stance.
Earlier I was breathing at about 1 breath per 2 seconds which was a fast pace. I noticed I was breathing quicker the longer I held the posture and that’s what made me decide to slow the breathing down.
Slowing and regulating my breathing certainly feels more energising.
Eventually when I reach my target of one hour standing practice my total breaths will be about 900.