Lee,regarding your last two comments, I dont think, I get your point.
If your feet are not actively grasping and extending into the ground, either because they are totally relaxed to the consistency of chocolate pudding, or because they are just stiffened up into club feet, then they offer about as much ability to lift you up against the force of gravity or anything else as if they were nothing more than the same volume of chocolate pudding. So if trying not to move your feet leads to that, chocolate pudding feet, but really, chocolate pudding legs and chocolate pudding body. That's what I meant. Now I am hungry.