Short answers, pulled from the story.
The word Pehlwani derives from the Persian pahlavan, meaning champion or warrior, originally used to refer to skilled warriors on the battlefield. In India, the term pahelwan is a title to refer to a wrestler. Pehlwani, also known as Kushti, is a form of wrestling practiced in the Indian subcontinent.
Vishnupant Nagrale was the first wrestler ever to hold the Rustam-e-Hind title. This title was used until modern times to award champions in India. Other past holders include Dara Singh, Sadika Gilgoo, and Harishchandra Birajdar.
The Great Gama became known as Rustam-e-Zaman when he defeated Stanislaus Zbyszko in 1910. He also won notable victories in London against Ben Roller and Stanley Zbyzsko following in 1910. The Great Gama is considered one of the greatest wrestlers of all time.
Physical training in the art is referred to as virayam and has remained the same for over 150 years. Exercises include Surya Namaskara, shirshasana, danda, bethak, and the use of heavy wooden clubs called gada. Wrestlers also perform Sawari, which uses another person's body weight to add resistance to exercises.
Milk and ghee are regarded as the most sattvic of foods and, along with almonds, constitute the holy trinity of the pehlwani khurak. A common snack for pehlwan are chickpeas that have been sprouted overnight in water and seasoned with salt, pepper and lemon. Many pehlwan eat meat due to its high protein content, such as Famed pehlwan Dara Singh who used to eat more than a pound of meat every day.
The length of every bout is specified beforehand, usually about 25 or 30 minutes. If both competitors agree, the length of the match may be extended, typically around 10 or 15 minutes. A win is achieved by pinning the opponent's shoulders and hips to the ground simultaneously, although victory by knockout, stoppage or submission is also possible.