Yoga Sutra 2.50 Systematic long and subtle breathing

What is the duration of your natural, involuntary inhalation? How does it compare to the duration of your natural exhalation? Is there a brief pause during the transitions between exhalation and inhalation? Can you direct your breath to move the lower torso, mid torso and upper torso? https://simple-yoga.org You can get your copy of the book Unravel the Thread at: https://www.amazon.com/dp/1737648202/