A Long Rest is a period of extended downtime (at least 8 hours) available to any creature. During a Long Rest, you sleep for at least 6 hours and perform no more than 2 hours of light activity, such as reading, talking, eating, or standing watch.
During sleep, you have the Unconscious condition. After you finish a Long Rest, you must wait at least 16 hours before starting another one.
Benefits of the Rest. To start a Long Rest, you must have at least 1 Hit Point. When you finish the rest, you gain the following benefits:
Regain All HP. You regain all lost Hit Points and all spent Hit Point Dice. If your Hit Point maximum was reduced, it returns to normal.
Ability Scores Restored. If any of your ability scores were reduced, they return to normal.
Exhaustion Reduced. If you have the Exhaustion condition, its level decreases by 1.
Special Feature. Some features are recharged by a Long Rest. If you have such a feature, it recharges in the way specified in its description.
Interrupting the Rest. A Long Rest is stopped by the following interruptions:
- Rolling Initiative
- Casting a spell other than a cantrip
- Taking any damage
- 1 hour of walking or other physical exertion
If you rested at least 1 hour before the interruption, you gain the benefits of a Short Rest. You can resume a Long Rest immediately after an interruption. If you do so, the rest requires 1 additional hour per interruption to finish.
SRD 5.2.1, p.185 · CC BY 4.0