For me two things stick out:
Started using a typewriter at age 7, as it was "painful to write". My hand/wrist/arm twisted badly when I tried to write by hand (last year was first time I had heard the word Dystonia).

At age 20, friends in college still remember me for arms that never swung when walking, and the oddest gait in how I walked.

I built the finger treadle in 1995, but always thought it was odd as sometimes I could (kind of) get it to work, and other times just couldn't make it go at all!