You know how we RUN all the time in this game and just about every other FPS. So with this in mind, I have a very simple task that will only take 60 secs. We all can agree that 60 secs it not that long at all. As a matter of fact, it's a very short period of time. So here is the task. Go outside and find an open area and for 60 secs run as fast as you can. RUN, not jogging, walking fast or whatever may come in mind. Start out at a dead run and don't stop for 60 secs. Easy enough, right?? Get back to me on your results.
I'm not quite sure of the point you're trying to get at here...
If it's a jab at the real-world feasibility of running minutes or miles on end, then I have about 50 LMGs in my backpack that would like to have a word...