Initially, I'm lazy to go for a walk and prefer to take my bike or atleast a bi-cycle for reaching any nearable place. As days passed by, walking becomes an entertainment to me. Nowadays, If i missed walking a single day, I feel I lost something. Walking improves concentration, gave time for me to plan and think. I have noticed that, if something boils my mind when I start walking, I have ended up with some sort of solution to that when I finished the walking for the day.
Nowadays, I usually cover for about 4 Kms/Day on an average through walking. I remember studying an article which says that walking is even better then running or jogging. The thing is that one should accelerate as one started walking. One should try for the maximum speed and that helps to keep the body fit.