Like most people who live near water bodies, Alok Mondal (36) was a natural swimmer since boyhood. Bidhan Pally in suburban Kolkata, where he lives, is dotted with ponds and lakes and Alok and his siblings – two older brothers and a younger sister – used to jump into the water to catch fish. Although his legs went numb when he was 2.5 years old (he didn’t specify whether it was a polio attack) and he has had locomotive issues ever since, he was an avid swimmer.