One Minute Breath Tips via IKYTANovember 15, 2006 3:32 pm Pranayama
Gotta give a shout out to the IKYTA blog for this one.
They provide useful insight into this focused pranayama here.
If I may paraphrase the One minute breath is broken down into 3 parts, 20 second inhale, hold 20 seconds, and a 20 second exhale.
This breath has a calming effect due to brain hemisphere co-operation.