Hi there! I am still working on my form. And I am a DIY kind of guy, so I read a lot of stuff to get tips&tricks that I can pay attention to while running. One of the things that puzzles me is that I feel there is a contradiction between Bob's mantra "Bend the knees" and the concept of "running light", which is promoted in for example Michael Sandler's book on barefoot running. When I focus on bending my knees, it seems the time my foot is in contact with the ground gets longer and I am making myself less tall. When I try to adopt the idea of running light - as if there is a string pulling me up through my head - this encourages making myself tall and bending the knees doesn't work anymore. Can anyone explain how the 2 views can be combined? Or are we talking about 2 different barefoot techniques? Thanks in advance!