Swami Ramdev was born on 25 december 1965 in Haryana (district- Mahendragarh,Alipur, village- Narnaul) in an uneducated family.
His real name is Ramkrishna Yadav. He did his primary schooling upto class 5 from his village and then went to Shehjapur village to study upto class 8.
When he was a kid, the left side of his body got completely paralysed. He recoverd from it through yoga.He left his home after passing 8th. He went to Khanpur village where he joined Acharya Baldev's Gurukul. He was highly impressed with Panini's knowledge about Sanskrit grammer, Vedas and Upanishads.
He became a sanyasi while staying at the ashram and changed his name to Swami Ramdev.
He started giving yoga lessons in Acharya Dharmaveer's Gurukul Kalva in Haryana.
He went to The Himalayas to attain mental peace and then returned back in 1993. And in 1995, he became a disciple of Swami Shankardev who was the president of Kripalu Baag Ashram in Haridwar.
In 1995, after taking blessings of his guru he went on to spread awareness among the people about yoga and its benefits.
He went to every nuk and gully of Haridwar to promote yoga and distributed pamphlets which told the benefits of yoga.
He experimented yogasans on human body and then after his research he established his Yoga Health Principles. In 2002, he for the first time publicly announced these principles.
In 2003, he started his yoga treatment camps. He learnt English and treatments of diseases and gained knowledge about modern day medicine from reputed doctors.
In 2006, he established Patanjali University in Haridwar.
In other words, he started his jouney with almost nothing but because of his efforts and principles he is now a yoga guru and a sculpture of new india.