Some sort of stamina for survivors
Now, hold your f-ing horses and read this word by word, letter by letter. I think that survivors that run for long periods of time should get exhausted. I don't mean hindered or anything like that, just exhausted. I don't think you could still hold your breath easily after running continuously for a minute straight (unless you're an athlete of course). Just tell me your opinions about this, no need for a fight or something. Maybe you guys can come up with a better idea.