Research done by the University of Illinois states that walking not just provides good physical health but also improves your mind and boosts your brain power. A study conducted on people said that those who walked regularly at least three times a week for six months performed better than those who did stretching or toning exercises.
In rural India, walking is not at all a problem as short distances are mostly covered on foot and the spacing out of houses insures some amount of walking, but the cities of India and the flat system curb any form of walking. But take heart! Just because you live in a flat in the city does not mean you can not find ways to take regular walks to the nearest park. One can start making a habit of walking down short distances rather than taking out the vehicle. With ingenuity, there can be no limits to ways to walk that bit to keep oneself fit.