The wiki says I can train healing by simply hurting someone and then healing them. This is not working for me. Me and a friend took turns at this and each time he was able to heal me, but I was never able to heal him. The message said "There are no wounds/fractures you can heal" or something like that. At one point I severely injured him and still there was no possibility to heal.
I have the skill unlocked, the previous skill is over 90. Does anyone know what I am doing wrong?