Hey Adam, there was one thing that's always confused me which has never been mentioned in the Wall-Up tutorial. What I was wondering is how, in conjunction with your foot placement, your legs should be. I noticed that some people keep their legs almost straight and at waist level, but for people like me I realized that I'm placing my feet a few inches below with bent legs, depending on flexibility. I thought that the concept of a wall-run is transferring your momentum into the wall, but I don't understand how you are able to push off if your leg has no room to push anywhere other than out. So I guess the main question is: Should the pushing leg be generally tense, locked (guessing not), etc.?