I do know of guys shattering their heels and damaging their backs falling off ladders the way I did...I guess I must just have stronger bones/tougher ankles...
When I first started my own self employed back in 1989, I didn’t wear work clothing or steel cap shoes or boots, just trainers.
I was 3/4 the way through a fairly big house, climbed the ladder with the wash and squeegee in back pocket, wash the window and went to get the squeegee from my rear pocket and didn’t grab the ladder , then I started falling off the ladder, land on the ground on my feet, and immediately bend my knees to stop any more damage.
My parents came and collect me and went to hospital, the x ray show I had broken the heel in three places, so although my leg wasn’t plastered, it was bandaged up and I was off work for 6 months.