They never thought about it, it sounds so logical (that's what everyone tells me). But now you can see that gravity will make you fall forward when you are off balance for standing still (the top of the leg ahead of the foot). Gravity pulling the top of the leg ahead of the stationary foot is the only power that can move you from one spot to another to walk and run. It is unbelievable that researchers, looking at the same picture as me, of a runner with his leg slanted behind his body, also never figured out he is falling forward. When God's way is learned, it will make the current running experts obsolete. I have endorsements, but what do they mean if they come from outdated experts?
A sprinter's leg, shown in a complete stride cycle, in figures from A to D. At the end of his speedup phase. Everyone speeds up this way to reach their pace. They land behind their body, but they never noticed it. A sprinter does it more to the rear, and for more strides to reach a faster speed. Faster speed, spreads the feet farther apart.