Comment by lapcat

I think this is somewhat misleading. Walking is one of the least strenuous forms of exercise. I could walk all day on a treadmill, no sweat (literally). When I was playing singles tennis almost every day, on the other hand, it was exhausting, I was in the best shape of my life, and I could eat as much as I wanted. Indeed I had to eat more, because my body demanded it. And elite athletes eat a ton of food, an obscene amount of food, but they also have the best bodies. Walking is fine for people who can't do anything else, such as the elderly, but otherwise it's simply not enough exercise.

In general, weight is not really a great measure. You can lose weight by losing muscle. I "measure" my own body by looking at it in a mirror.