eli5: how does it work that for every pound of weight you lose, there is a 4 pound stress reduction in your knees?

Question

eli5: how does it work that for every pound of weight you lose, there is a 4 pound stress reduction in your knees?

In: 1542

Answer 1

Force not weight. If you weigh a pound of fat, it shows 1lb. If you throw that same piece of fat it will generate more than a pound of force. Knees take forces.