Depiction of realistic violence in books and films

Just been watching Tin Star which isn't bad. The writers are trying to be down and dirty in their depiction of violence but they don't appear to have a clue about the effect that a single punch can have on a man's face. In one scene the hero (?) lies down on the floor and curls up allowing a group of bikers to kick the s*** out of him. The next day he's fully recovered.

Well I was on the receiving end of such a kicking by a group of football fans and I can assure you that pulling your knees up and covering your head with your hands does not protect you from concussion, broken ribs and extensive bruising to face, chest, back and legs. Furthermore, there is no way that you are up and about the following day as if nothing had happened.

I'm all for a bit of brutal violence when the story calls for it. However, If you write a film/book with realistic violence in it you must also be realistic when it comes to showing the after effects of such violence. (If you check out Ian Fleming you'll see he always described in detail the slow recovery that Bond went through after being tortured/beaten.)
Cheers

Jim