Health (or hp)is a game mechanic in Apocalypse Rising. Health is shown as a bar in the bottom left of the screen. If you get hit by a car, get attacked by a zombie, fall off high places, walk/run over a mine, use too many painkillers, starve or dehydrate, or get shot at by players, you're health will go down, if your health bar is extremely low, you'll start to hear heart beats, the edges of the screen will get black and red, you might see blood spots, and if it gets past that point, you die. To replenish this bar before you die, you must use a blood bag or eat some food. The vitality perk helps to restore health points over the course of time (ten minutes for one percent health to go to maximum health).