Hockey has less padding than football (US). Most of it's jus taround the hips for falls because ice is MUCH harder than soft fuzzy grass with soft dirt underneath it. The same fall on a grass field might give you a bruise, but on ice it might break your pelvis.
Anyways, I used to always love those bonfil (?) bumper stickers that said "Give blood. Play hockey."
(For those across the pond, it was a blood bank)