Back pain 3 main reasons & treatment with easy exercise

Back pain 3 main reasons & easy treatment with simple gentle yoga exercises.
https://www.amazon.in/Simplified-Yoga-Backache-Subodh-Gupta-ebook/dp/B00DV1OO4S/
https://www.subodhgupta.com/causes-of-lower-back-pain-and-remedies/