When I go walking with my wife, six of her paces are equivalent to five of mine. Does this mean she gets more exercise than me?
It all depends on what you mean by exercise. Exercise requires us to do work, and this is calculated by the force that is used multiplied by distance moved. For their entire walk, the husband and wife in question cover the same distance. However, the force used may differ. Newton said force is mass multiplied by acceleration. If the wife weighs less than the husband, she will have done less work, and in that sense got less exercise, however many steps she took.
Continued Article: https://www.newscientist.com/lastword/mg24933202-900-when-walking-does-a-person-who-takes-more-steps-get-more-exercise/
