DALLE EPDM FOR DUMMIES

The 2 higher than seem strange to me. They can be literally the one points on which every online video I have observed do concur (as in "do bend your knees, do lift your heels") Hinging devoid of bending the knees / going the hips down ? How ?I would choose to have a vo2max test but listed here in Italy they are doing it on a treadmill or perhaps a