As a sports fanatic, Kumar had experimented with all forms of sports — from tennis to swimming to skiing. He decided to take up running in 1982 primarily because the only equipment required therein was a pair of good running shoes. “The first 15-20 minutes are a drag. But after that, when the endorphins kick in, it is a different kind of high,” says Kumar. And this explains why despite a hectic travel schedule for work, he is always up for an early morning jog even if he's returned home at 3 in the morning. “Contrary to popular opinion, running makes you feel less tired for the rest of the day. There have been days when I don’t run and on these days, I feel more lethargic and tired,” he adds. Kumar uses his runs to explore the cities he visits on business. He describes his most recent experience at Barcelona, “I ran at the Olympic stadium, which is fairly up the hill, and I didn’t feel tired. I couldn’t believe that at this age, I still have such stamina.” However, his time in Chicago by the lake in the cool October weather is his most cherished memory.