I keep whacking my head on Cessna wing struts, trailing edges of wings, and
lowered flaps. Wearing a ball cap minimizes these injuries. I have also
pulled shoulder muscles falling off the fuel steps. I have also pulled a
shoulder muscle and hurt my back falling off the fuel step and hitting a
float strut on the way down while checking the oil on a Cessna 182 on
amphibs. I also have bruised my back and ribs a few times backing into a
prop blade when climbing down from a fuel ladder or moving the fuel ladder.

Twisted my ankle hopping off a float into the muck. Broken fingernails
pumping floats, straightening seat belts, closing doors, etc. Burned
fingertips on dipsticks and mufflers. Cut my knees on broken glass crawling
under low wing airplanes. Bruised my thighs on various struts.

Come to think of it, I may be just a little bit clumsy.