Steak the reder the better?

Dose steak loose it's protein when it over cooked? Or it dosn't matter if it over cooked or under cooked.:dg:

As far as protein is concerned, the more rare the better. However, that is not realistic in todays society (we lost the ability to properly digest raw meat a Loooong time ago). If you eat raw meat, or near raw, you might get sick. Cook it the way you want, but if it's burnt, its garbage. A little pink is good for me.

Black and Blue Thats how ya eat it :)