The Rest card: what it does and when to play it
Rest is one of your six starting Explore cards, and it is the simplest healing you have from the first floor. Its card text reads: heal 9 health, increase this card's healing by 3, and start the next combat with Well Rested.
The permanent part of that text is the reason to play it early. Every time Rest resolves, its own healing goes up by 3 for the rest of the run, so a card you use in the first ten minutes is a much bigger heal by the last floor. Skipping it because you are at full health wastes that growth.
Well Rested carries into the next fight, which makes Rest useful right before a fight you expect to be long rather than right after one you already survived. Playing it with nothing ahead of you spends the turn and gets only the healing back.
Sleeping at camp: the part that costs you
Camps are the stops between tunnels, and the resource that governs them is Warmth. The game's own glossary defines Warmth as what protects you from danger, and resting or drawing another hand consumes it.
That is where the damage comes from. Hazards left around a camp make sleeping there costly, and the game does not hide the bill: at each campsite the interface shows how much damage you will take if you sleep. Read that number before you confirm, because it is the whole decision.

You can reduce the cost rather than accepting it. Lighting the campfires, killing leftover shrooms and clearing human remains around the site all work against the number the interface is showing you. One reviewer puts it bluntly: even after doing all of that, some negatives remain, and at many campsites the sleep is still not worth taking.
You also regain stamina after each fight, so the draw of a fresh hand is often smaller than it looks. Walking on and fighting the next group of mushrooms is a real alternative to sleeping.
Camp buildings are the third thing called resting
Camp buildings are Explore cards you play to place a structure. Most of them modify one of your cards for the rest of the run: you choose the card, and the building changes it. Some of them heal, and that is where the "resting heals you" reports come from.
- Sleeping Bag
- Get cozy: heal for half your Warmth when resting. Consumed on use.
- Camp Fire
- Add Warmth to hold danger at bay. Consumed on use.
- Kitchen
- Build a structure that seasons your weapons. Consumed on use.
- Practice Dummy
- Sharpens your attacks, so it is a damage upgrade rather than a heal.
- Workbench
- Upgrades attacks. Consumed on use.
- Wrecking Ball
- Draw a card and reset a camp structure, which lets you reuse one.
The Camp Fire and Sleeping Bag pair is the clearest example of how camp healing actually works. The fire raises the Warmth you are holding, and the bag then converts half of that Warmth into health when you rest. Healing at camp comes from the buildings you placed, not from the act of sleeping by itself.
That distinction matters most on The Facility route. The caves are built around healing in combat through food, while player write-ups describe The Facility as asking you never to heal in combat and to heal at camp instead. On that route the bags and fires are not a convenience, they are the healing system.
How to decide, and the trap to avoid
Play Rest from hand whenever it is free and its healing matters. It costs you nothing permanent and it grows every time it resolves.
Sleep at camp when the damage preview is small against the health it returns, and skip it otherwise. Clearing the hazards first changes that comparison, so the cheap sleeps are usually at camps you have already tidied.
- Read the damage preview before you sleep. If the number is close to what you would gain, do not sleep.
- Light the campfires and clear leftover shrooms and remains first, then read the number again.
- Check whether a health gain is actually needed. Stamina refills after each fight, so the hand refresh is a smaller benefit than it appears.
- On The Facility, treat camp as your only heal and budget for it, because combat healing is not the design there.
The failure mode runs the other way too. A player who beat both endgame bosses writes that late in a run you can stay in one room, sleep repeatedly and walk out with a pile of card upgrades and maximum health, and suggests limiting sleeps to two per camp as the fix. Sleeping is not weak; it is the repeatable use of it that gets out of hand.
Reports on whether sleeping heals or hurts are split, and the split lines up with build and route rather than with the mechanic itself. If you are reading a claim that sleeping never heals, check whether it was written against the demo build and whether it was about the caves or The Facility. Patch notes that settle it will appear on the official Steam news hub.