I walk quickly with long strides, so steps always seemed like a bit of a kludge - someone with shorter legs would presumably take more steps to travel the same distance as me, but would that necessarily make them &#x27;healthier&#x27; than me?<p>In high school we had a cardio class and the requirement was &#x27;get your heart rate above xxx BPM&#x27; - it would take less effort for out of shape folks to get above the threshold