This script mainly is to add onto the current fatigue system, as I do not think it took very many factors into account that had weight to your characters performance in the field. My script aims at making the effects of fatigue more impacting on the player, as well as adding in way more factors for fatigue to rise or fall.
Put the script inside your mission folder, then put this code inside init.sqf
Using the slow jogging stance or walking or of course standing still will help to lower your fatigue.
If you have high fatigue, you will begin to black in and out, and if it happens too many times, your player will collapse to the ground for a few seconds.
If your character collapses 3 times, you will die.