WATCH HOW HE LANDS MORE BEHIND HIS CENTER OF GRAVITY THAN ANYONE ELSE, WITH A LOW KNEE LIFT AND UPRIGHT POSTURE this is;
GRAVITY RUNNING,
THE FASTEST WAY TO MOVE FORWARD WITH GRAVITY. It is all with the slant of the leg to place the foot in relation to the upper body's center of balance. Tilting the upper body has no effect on speed. Michael Johnson broke the sprint record with a backward tilted body. His foot placement was better than the others. That is the only way everyone wins.