Now either way, obviously it's a head injury and must be dealt with, but we're going to do an overall thing here by saying right, now the next one on the list is concussion  now concussion is shaking of the brain inside the skull  now there's noth no room for anything but the brain inside that skull, so if that's shaken the brain hits against the sides of the bra of the er bone, and bruises  so what actually happens here is the brain gets shaken and the nerve cells get damaged  now you've all seen this con and it's so easily done concussion, you can go through a whole list of things which can cause concussion, road traffic accident, sport, construction working erm anything that erm, heading ball, football that's another one that erm you get quite a bit of concussion and of course boxing