Short Rest and Long Rest Rules
The rules governing short rests and long rests form the core recovery framework in Dungeons & Dragons 5th Edition, determining how quickly characters regain hit points, expended spell slots, and class-specific resources between encounters. These two rest types operate on distinct timescales and restore different categories of abilities, making their correct application central to encounter pacing, resource management, and overall campaign balance. Dungeon Masters and players who misapply rest rules can inadvertently make the game either trivially easy or punishingly difficult. The full resting rules framework, alongside the broader dnd-core-rules-overview, provides the structural context in which these mechanics function.
Definition and Scope
A short rest is a period of downtime lasting at least 1 hour, during which a character does nothing more strenuous than eating, drinking, reading, or tending to wounds. A long rest is an extended period of at least 8 hours, during which a character sleeps for a minimum of 6 hours and performs no more than 2 hours of light activity such as keeping watch, reading, or talking.
These definitions come directly from the Player's Handbook (Wizards of the Coast, 5th Edition, Chapter 8) and are reproduced in the Systems Reference Document (SRD) 5.1, which Wizards of the Coast released under Creative Commons Attribution 4.0 International. The SRD is the authoritative public reference for these mechanics.
Both rest types serve as gating mechanisms on player resources. Without rest rules, the game's action economy — built around limited-use abilities and hit dice — collapses. The distinction between the 2 rest types is not merely one of duration; it governs fundamentally different recovery categories.
How It Works
Short Rest Recovery
At the end of a short rest, a character may spend one or more Hit Dice (up to the character's total Hit Dice pool). For each Hit Die spent, the player rolls the die and adds the character's Constitution modifier, recovering that many hit points. Hit Dice do not replenish on a short rest — only on a long rest (half the character's total, rounded down, are recovered after each long rest).
Short rests also restore specific class features. The following classes recover key resources on a short rest:
- Warlock — All Pact Magic spell slots are restored.
- Fighter — Second Wind (1 use) and Action Surge (1 use at most levels) are restored.
- Monk — Ki points are fully restored.
- Barbarian — Rage uses are not restored on a short rest (long rest only).
Long Rest Recovery
A long rest provides full hit point recovery and restores all spent Hit Dice up to half the character's Hit Dice maximum (minimum of 1). Nearly all class features that recharge on a rest cycle — including Wizard spell slots, Cleric spell slots, and Paladin spell slots — recharge fully on a long rest. A character can benefit from only 1 long rest per 24-hour period.
If a long rest is interrupted by at least 1 hour of strenuous activity — combat, casting spells, or traveling — the rest provides no benefit and must be restarted to count.
Common Scenarios
Dungeon Crawl Pacing
In a multi-room dungeon, parties typically encounter 6–8 medium or hard encounters before a long rest, as recommended in the Dungeon Master's Guide (Wizards of the Coast, 5th Edition, Chapter 3) for balanced resource attrition. A dungeon that permits long rests after every 2 encounters fundamentally undermines the attrition model the encounter-building system assumes. The encounter-building-rules and damage-and-hit-points pages address how hit point depletion feeds into this structure.
Urban and Social Campaigns
In campaigns heavy on social-interaction-rules, long rests are often freely available at inns or safe houses, making short rest mechanics less critical. Classes designed around short rest recovery — primarily Warlocks and Fighters — gain a relative advantage in encounter-dense environments and a relative disadvantage in rest-permissive urban environments.
Wilderness Exploration
During exploration-rules scenarios involving forced marches or hostile weather, the Dungeon Master may apply exhaustion-rules consequences that interact with rest interruptions. A character gaining exhaustion from a failed Constitution saving throw during a forced march cannot simply cancel that condition with a short rest — exhaustion requires a long rest to reduce by 1 level.
Decision Boundaries
The rules impose strict conditions on what qualifies as each rest type, and Dungeon Masters must adjudicate edge cases consistently.
Short Rest vs. Long Rest — Key Contrasts
| Feature | Short Rest | Long Rest |
|---|---|---|
| Minimum Duration | 1 hour | 8 hours (6 hours sleep) |
| Hit Point Recovery | Spend Hit Dice only | Full hit points |
| Hit Dice Recovery | None | Half total (min. 1) |
| Spell Slots (Wizard/Cleric) | None | Full recharge |
| Spell Slots (Warlock) | Full recharge | Full recharge |
| Frequency Limit | No limit per day | 1 per 24 hours |
Interruption Rules
A short rest is invalidated if strenuous activity occurs during it. A long rest is invalidated if more than 1 hour of strenuous activity occurs. A Dungeon Master adjudicating an ambush mid-rest must determine whether 1 hour of combat disqualifies the rest entirely.
Variant: Gritty Realism
The Dungeon Master's Guide presents an optional variant (Chapter 9, "Gritty Realism") that extends short rests to 8 hours and long rests to 7 days. This variant, discussed further under optional-and-variant-rules, dramatically shifts class balance — Warlock and Fighter become stronger relative to full spellcasters because their resource recharge occurs on a shorter cycle proportionally. This variant also intersects with downtime-activities-rules, since week-long rests overlap with downtime tracking.
Understanding how rest recovery interacts with spell-slots-and-spell-levels, exhaustion-rules, and the broader how-recreation-works-conceptual-overview of tabletop gaming as a structured recreational activity provides the full operational picture for applying these rules accurately at the table. The dndrules.com index organizes the complete ruleset reference for cross-topic navigation.
References
- Systems Reference Document (SRD) 5.1 — Wizards of the Coast (Creative Commons CC BY 4.0)
- Player's Handbook, 5th Edition — Wizards of the Coast (Chapter 8: Adventuring)
- Dungeon Master's Guide, 5th Edition — Wizards of the Coast (Chapter 3: Creating Adventures; Chapter 9: Dungeon Master's Workshop)
- Creative Commons Attribution 4.0 International License — creativecommons.org