After reading some of the other threads, I've been realising that most people walk 4.0 mph. Well, I've been excersing on the treadmill for a few days now, and go through a preset program called the interval walker. I do this two times a day, once in the morning, and once in the evening; 30 minutes each.
Basically, it starts at 3.0 mph, and slowly builds up speed to 4.0 mph where it holds that speed for three minutes, then goes back to 3.0 and repeats the process. I feel like I am getting the workout I need, but I could be wrong. After seeing that a lot of the members are walking at much faster rates, I feel inclined to push myself further.
However, I already build up quite a sweat by the end of the 30 minute walk, and I don't want to push myself too much. Do you think I should just stay with the program I already have, or should I push myself forward? Any advice or personal experience would be appreciated :P.