Food & Water

On Survival mode food and water are two gauges that steadily fall, water by one unit every 15 seconds and food every 21, and you take damage once either hits zero. You top them up at the Fabricator: cooking caught fish raises their nutritional value and removes the dehydration penalty raw fish carries, and dedicated items like Water and Isotonic Water cover thirst. The Slow Metabolism biomod doubles both intervals, stretching how long a meal lasts. See Biomods for that loadout choice.