An excerpt from a BKS Iyengar interview taken from the Astadala Yogamala, Volume 7, says it all.
“…I had tuberculosis as a young man and bouts of other diseases that had compromised my lungs. In 1984 I was in San Francisco for the first Int’l Iyengar Yoga Convention and some doctors insisted I undergo a test to study my lungs. They wanted to see the chemical changes taking place in my body on account of regular practice of asana and pranayama. “Sir, we are sorry to tell you that you are going to live long and our study has shown that your lungs are that of a twenty-four year old athlete.” So when you have such good lungs. You have a long life in front of you. I was already sixty-six at that time….”
For an amazing demonstration of Pranayama by BKS Iyengar watch this video!
Roberta Dell'Anno E-RYT 500, Certified Yoga for Scoliosis Trainer
Owner EssentialYoga Studio.
Roberta has been practicing yoga since 1988 and teaching yoga since 2004. She has studied extensively under master yoga teachers Patricia Walden, Zoë Stewart, Sri Arun H.S., Elise Browning Miller, and others. She completed a two year Iyengar Yoga Teacher Training program with Sr. Iyengar Teacher, Peentz Dubble in June 2017.
Roberta has studied yoga at the Ramamani Iyengar Yoga Memorial Institute in Pune, India during June 2011, February 2014, attended Abhijata's 2-week intensive in Pune, India, December 2016 and BKS Iyengar's Centenary 10-day intensive taught by Prashantji & Geetaji, December 2018.
She completed training and certification with Elise Browning Miller as a 'Yoga for Scoliosis' instructor in 2014, completed a 500 hour Hatha Yoga Certification program with AURA Wellness Center in 2005 and is registered with Yoga Alliance as an E-RYT 500. She has been a Certified Meditation Teacher since June 2007 and an Usui Reiki Practitioner since 1989.
The studio provides individual & specialized privates, semi-privates, group private sessions, and yoga workshops. Roberta conducts local and out of town workshops. She specializes in yoga for scoliosis and back care. She uses props to help students and teachers of all levels transform their backbends, twists, standing and seated postures, as well as inversions like sarvangasana (shoulderstand).
She also works with individuals who have physical challenges, specifically individuals with Multiple Sclerosis, CMT, Parkinson's Disease, scoliosis, and amputees in private, semi-private and group sessions.
Essentialyogastudio's Blog 
Nice posting. Do you know about these pranayama books?
http://www.YogaVidya.com/freepdfs.html
Hi,
Yes, I have these books 🙂