I am 5’7”-5’8” in 5/10 bike shoes. I can damage myself trying to stand over my 54cm bike frame. Someone early on said I needed a 52cm frame, maybe? Unfortunately there is little consistency in how bike companies measure their bikes.

There is even less consistency in human anatomy. Bike fitting is more of an art, even though there is valid science involved. Flexability, injuries, nerve issues.....all can play a part in all sorts of combinations.

I am finding the ultimate solution is in experimentation. The only thing I know for sure is herniating all but one cervical vertebra does not make it easier & definitely increases hand numbness.