Is that something you expect a 16 year old to know is going to happen?
Biomechanics is a complicated subject.
I worked on a farm throwing hay from 12-17. I ended up needing back surgery at 25.
It is hard to tell nowadays, with multiple people coming out and saying things like "millennials could afford houses if they didn't buy iPhones!"
I worked on a farm throwing hay from 12-17. I ended up needing back surgery at 25.