> “Step counts are accessible. People can understand them.” I don't. When I walk, one of my steps is roughly a yard (slightly less than 1 meter). Does everyo

> “Step counts are accessible. People can understand them.” I don't. When I walk, one of my steps is roughly a yard (slightly less than 1 meter). Does everyone have the same measure of one step, if not then how can it be used as an objective measure? When I walk 4 miles in 60 minutes, that's only about 7,000 steps, but I bet I'm getting more of workout than the 10,000 step routine. >Walking for 60 minutes at 3.3 miles an hour and running for 30 minutes at six miles an hour use the same amount of energy. In the 1960s, a book titled "Aerobics" promoted the same conclusion and through a simple point system, equated different amounts of running, swimming, cycling, walking, and so on for exercise purposes. As long as you got your 30 points per week, you were well on the way to having good cardiovascular health. Yet this article claims that simply being older means you expend more energy to perform the same amount of work. And also that how fast you walk doesn't matter. No direct evidence is provided for either claim, just some vague reference to a study.