And for me, it worked wonders. Took some time, of course, but when I got to where I had to do about an hour of walking a day to get to/from work, I basically dropped down to near school weight levels.

I suspect it is probably more than just an hours worth. Even today, if I build a habit of taking the dog on a walk around the neighborhood, that is probably a good hours walking on a single outing. I'm years from it, but I know I had to put in about 5 miles 1 way, which means I was probably doing 2-3 hours a day. And, again, I shed the pounds almost too rapidly.

It helped that it basically removed all of the time I would otherwise use to sit around and snack. :D