When I was in 7th or 8th grade, probably the most physically awkward time in my youth (because I was tall and skinny for my age): a few guys kept randomly trying to trip me as I walked by them on multiple occasions; they never succeeded, but I clearly remember one time they tried, and I barely stumbled…only to get another ten steps or so before I tripped over… nothing. There was nothing there to trip over, not even a crack in the sidewalk. (I managed to stay on my feet, but was embarrassed for a while afterwards.)
Until my mid 30s, I would regularly trip over very small things, like a barely-raised crack in the sidewalk, or a tiny rock that was barely more than a grain of sand, or the thousand and one times that one for tripped over the other.
Plus all the times I’d bump my head, hit my funny bone, drop what I was holding, stub my toe, bang my shin, slam a finger in a door or drawer, etc. I’m not super clumsy, but I’ve done a lot of clumsy things in my life.
Over time, I’ve gotten better at controlling my body, so that these things occur less and less, so I must be doing something right.