Swami Ramdev (born as Ramkrishna on 11 Jan 1965 in Haryana) alias Baba Ramdev is a spiritual leader known for his ventures in yoga, ayurved and agriculture. Baba Ramdev is best known for popularizing yoga among health conscious Indians through his mass yoga camps & TV shows. Since last year he has become more controversial for his continued advocacy on Indian political issues.

Ramdev was born as Ramkrishna Yadav to Gulab Devi and Ram Nivas in the Alipur village of Mahendragarh district in Haryana state of India.He had a formal education till 8th standard in school. He then studied Indian scriptures, yoga and Sanskrit in various gurukuls. Eventually, he became sanyasi, renouncing worldly life & took present name as Baba Ramdev. While living in Kalva Gurukul of Jind district in Haryana, he offered free yoga training to villagers for some time. Then he moved to Haridwar, Uttarakhand and spent several years studying ancient Indian scriptures at Gurukul Kangri Vishwavidyalaya. This included a rare book of Aurobindo Ghosh, Yogik Sadhan, translated from Bengali into Hindi by Pandit Ram Prasad Bismil. After reading this small booklet योगिक साधन he went to the caves of Himalaya and practised intense self-discipline and meditation.

Zakir Abdul Karim Naik (Urdu: ذاکر عبدالکریم نائیک; born 18 October 1965) is an Indian public speaker on the subject of Islam and comparative religion. He is the founder and president of the Islamic Research Foundation (IRF), a non-profit organisation that owns the Peace TV channel based in Dubai, UAE. He is sometimes referred to as a televangelist. Before becoming a public speaker, he trained as a doctor. He has written two booklets on Islam and comparative religion. He is regarded as an exponent of the Salafi ideology; he places a strong emphasis on individual scholarship and the rejection of "blind Taqlid", which has led him to repudiate the relevance of sectarian or Madh'hab designations, all the while reaffirming their importance.

Zakir Abdul Karim Naik was born on 18 October 1965 in Mumbai, India. He attended St. Peter's High School in Mumbai. Later he enrolled at Kishinchand Chellaram College, before studying medicine at Topiwala National Medical College and Nair Hospital and later the University of Mumbai, where he obtained a Bachelor of Medicine and Surgery (MBBS). His wife, Farhat Naik, works for the women's section of the IRF.