TheETG 3 minute running form video.
The applied sport science called running biomechanics…..the applied physics of running.
The basic applied concepts…..
— angular momentum
— ground reaction
— foot strike.The propulsion muscles.

Everything on the -back- of the legs…
— glutes
— hamtrings
— calfs

TheETG free pdf packets;
—– TheETG optimal running form
—– TheETG range of motion