DayZ
Metabolism Drain
DayZ kills more players through neglected metabolism than through gunfire, and the drain rates are not intuitive.
How this is calculated
Water and energy deplete continuously, faster when sprinting and faster still in cold. The calculator estimates how long your current state lasts under a given activity level, so you can judge whether a trip to the next town is survivable on what you are carrying.
The arithmetic
- drain rate = temperature multiplier × movement multiplier
- hours until empty = 48 ÷ drain rate
What people get wrong
Temperature is the multiplier people forget. Being wet in cold weather accelerates energy drain enormously, so a river crossing early in a journey changes the maths for everything after it.