Some Surviving realism-suggestions: - you have a stamina bar - you also have a breath bar - the breath bar is always 20 % of your stamina bar, so when your staminabar drops, your maximum breathlevel also drops - every movement decrease your stamina bar a bit(normal running, going, sprinting) - when you sprint, your breathbar drops, this also decrease your stamina bar a bit - when your breathbar is zero, but u still sprint, your stamina bar start to drop rapidly - when you stop sprinting and run at normal speed, your breathbar regenerate slowly up to 100 % - when your staminabar is zero, you became unconscious - eating, drinking increase your staminabar, but not your breathbar - sitting, lying arround increae your stamina bar and breathbar(it fill up rapidly) - sprinting, running increase also your body temperature when u have a full stomache, u could get a debuff over time for your breath(-50% or so) and when your breath is zero and you still sprint, your charakter puke and you have to eat again. maybe food increase the staminabar different. For example energy bars increase your stamina more than your hunger or meat increase your hunger alot, but your stamina bar only a bit with this system, it will ad some awesome realism, wehn you hunt people or you run away from other players. you have to plan your rations and your movements.