27 September

Ideas and exercise can't be separated. Why do we strain to go up stairs? Mostly because, I think, we feel that we need to 'climb' them. Climbing as an idea has a set of other assumptions, about needing to pull or push yourself up. We feel we need to push ourselves up on each step, to get to the next one. Notice though that most of your body is *already above* the level of the next step. If you just smoothly transfer your supporting surface (your foot on the step) to the next step, there's no pulling or pushing needed at all.