I try, from aesthetic reasons, to not step on cracks, which often means nonpatterned walking, especially in malls where there are random tile size arrangements.
Yay minor OCD! Around 6th grade I went through a phase where I could only step into a new area with my right foot. It faded by the end of high school, but I still do it occasionally. I never thought of it as training for Arrakis before.
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