Second sequence is similar but taking 5 successive breaths and holding the fifth.
Part three is taking 7 successive breaths and holding the seventh.
This is what must be done on the first day of the technique. On the second day you repeat this whole sequence 3-5-7, two times. One the third days you do it three times. Keep adding them up until you reach the eleventh day. It might only take you five minutes the first day but by the end it takes an hour or more depending on your retentions and pauses." David, Valhalla Yoga Center, Victoria, BC.
I am taking this entirely in a quote from my Yoga book from my Yoga school. Thank you David and Marina.