Modi walks in the wild with Bear Grylls

Walking through the wild and taking a ride on a cold river in a makeshift boat were some of the things that Prime Minister Narendra Modi put up with as he teamed up with survivalist Bear Grylls to promote causes close to his heart -- conservation and cleanliness.

In Discovery channel's, "Man Vs Wild with Bear Grylls and Prime Minister Modi", he braved the rain and the cold in the jungles of Jim Corbett National Park, Uttarakhand, and as the host put it, the PM was a "great sport".

Grylls, who has had celebrity guests before on his show, including former American President Barack Obama, asked Modi about his childhood, dreams as the prime minister, whether he feared anything in life and if he felt nervous before a political rally.

Modi said he never had a good answer about nervousness because it was not a part of his experience.

"My problem is that I have never experienced such fears. I'm unable to explain it to people what nervousness is and how to deal with it because my in-built temperament is very positive. I see positivity in everything. And because of that reason, I am never disappointed."