Healing, yeah. I don't know the rules of your world. But sure, we don't get sick, take hits better, and heal faster. But if you lose a limb and it doesn't get surgically reattached, it's gone.
You should tap out of any scientific experiment, period. God knows what people would do with your DNA.
I mean ice-skating should be mostly safe. NHL players can go entire careers without losing fingers. If you two can't you're doing something wrong.