HOPPING IN RUNNING
Hopping, as everything in life and Nature, has two sides to it: positive and negative.
On the one hand, it is positive, because it allows the runner to change support from one leg to the other by bouncing his body weight off the ground and releasing the foot and leg from the body weight to make it possible for it to be pulled from the ground.
On the other hand, when hopping is exaggerated, the body moves too much up and down, which interferes with the forward motion. So we need hopping, as a training device, but only to the extent of letting the body weight break contact with the ground. Everything above and beyond this necessary level should be "cut off".
The necessary level can be achieved with the command and performance of pulling the foot from the ground.
It reinforces, on the one hand, bouncing the body weight from the ground by activating muscle elasticity. And on the other hand, it doesn't allow hopping to be manifested in the full range, with too much vertical oscillation of the body, by restricting the active straightening of the leg's joints, especially in the knee. That's why we are using the command and action of pulling in Pose Method.