Energy
A player requires energy to use their tools, with the exception of the microbe detector. The player can keep track of how much energy they have by looking at the energy is a bar in the top right corner of the user interface (UI), next to the health bar. As the day progresses, and the player uses their tools, the bar will shrink.
The primary way energy can be restored is by consuming food. To consume food, put it on the hotbar and press the 
(or secondary key). The player will get a popup notification confirming they want to eat that item. If the player selects "yes" they will eat the item and regain the amount of health or energy specified on the tooltip of that item.
The player can also replenish their energy by sleeping, as long as they go to bed before 2am, they will wake up with a full energy bar.
The player can take a trip to the holo-sim, to regain energy lost by soaking in the spa, or relaxing in a chair by the beach.
The player will pass out when their energy reaches zero, and if on a planet's surface, will be automatically taken back to their ship. A small cutscene will play with Frances, then the player will be taken to bed, regardless of what time it is. The player will not need to pay any credits, nor lose any of their items they had in their backpack. The next day the player will have a decreased energy.