I was reading Gordo Byrn's/Friel's book, "Going Long," excellent book, by the way. There is a segment in it referring to correct running form and posture and "striding." It's clear that in most of the books, Dave Scott, and Salazar's books, the correct idea is to roll off your heel and push off on the "big toe," which all seems natural enough, EXCEPT, no one has addressed this issue.

This is hard to explain, but when you push off the big toe, do you make your foot and ankle extend back or point back behind your leg, in that short moment in the stride, like you were foot was about to punt a football?

There seems to be an additional muscle or tendon or something in the ankle or arch, adding some forward push here, or is it proper just keep the foot and ankle relatively stiff after you push off on the big toe. Granted in every case in which you push off your big toe, there will be some angling back of the foot, I guess my question is, is it right to exaggerate the foot or arch muscles in the "push off."