Hahaha
leaf springs have a high carbon/silicon content to aid in the formation of sub-eutectoids and micro pearlites on a molecular level for rigidity you can't bend them like mild steel or they'll break
Still impressive though haha
After breaking my neck I'm leg pressing 1/2 a tonne on reps
still got to add another 260kg to get back to pre broken spine weights
Then I might try breaking some leaf springs
