diff --git a/server/src/config/runtimeConstants.ts b/server/src/config/runtimeConstants.ts
index e3ccae8..d634ade 100644
--- a/server/src/config/runtimeConstants.ts
+++ b/server/src/config/runtimeConstants.ts
@@ -2,7 +2,7 @@ import type { TunableConstants, TunableKey } from '@dflike/shared';
 import {
   TICK_RATE, BROADCAST_EVERY_N_TICKS,
   HUNGER_DECAY_PER_TICK, ENERGY_DECAY_PER_TICK, HUNGER_THRESHOLD, ENERGY_THRESHOLD, NEED_RECOVERY_RATE, THIRST_DECAY_PER_TICK, THIRST_THRESHOLD,
-  SLEEP_ENERGY_RECOVERY_PER_TICK, SLEEP_HUNGER_DECAY_MULTIPLIER, SLEEP_WAKE_THRESHOLD, SLEEP_VOLUNTARY_ENERGY_THRESHOLD,
+  SLEEP_ENERGY_RECOVERY_PER_TICK, SLEEP_HUNGER_DECAY_MULTIPLIER, SLEEP_WAKE_THRESHOLD, SLEEP_VOLUNTARY_ENERGY_THRESHOLD, NAP_BUFFER,
   PRODUCTIVITY_DECAY_PER_TICK, PRODUCTIVITY_THRESHOLD, PRODUCTIVITY_RECOVERY_RATE,
   DAY_NIGHT_RATIO, DAY_HOURS, SUNSET_DURATION_HOURS, SUNRISE_DURATION_HOURS, NIGHT_DARKNESS,
   AWARENESS_RADIUS, FACING_DURATION, PAUSING_DURATION, EMOTING_DURATION,
@@ -13,7 +13,7 @@ import {
 const DEFAULTS: TunableConstants = {
   TICK_RATE, BROADCAST_EVERY_N_TICKS,
   HUNGER_DECAY_PER_TICK, ENERGY_DECAY_PER_TICK, HUNGER_THRESHOLD, ENERGY_THRESHOLD, NEED_RECOVERY_RATE, THIRST_DECAY_PER_TICK, THIRST_THRESHOLD,
-  SLEEP_ENERGY_RECOVERY_PER_TICK, SLEEP_HUNGER_DECAY_MULTIPLIER, SLEEP_WAKE_THRESHOLD, SLEEP_VOLUNTARY_ENERGY_THRESHOLD,
+  SLEEP_ENERGY_RECOVERY_PER_TICK, SLEEP_HUNGER_DECAY_MULTIPLIER, SLEEP_WAKE_THRESHOLD, SLEEP_VOLUNTARY_ENERGY_THRESHOLD, NAP_BUFFER,
   PRODUCTIVITY_DECAY_PER_TICK, PRODUCTIVITY_THRESHOLD, PRODUCTIVITY_RECOVERY_RATE,
   DAY_NIGHT_RATIO, DAY_HOURS, SUNSET_DURATION_HOURS, SUNRISE_DURATION_HOURS, NIGHT_DARKNESS,
   AWARENESS_RADIUS, FACING_DURATION, PAUSING_DURATION, EMOTING_DURATION,
diff --git a/shared/dist/constants.d.ts b/shared/dist/constants.d.ts
index 398fe20..21ab93b 100644
--- a/shared/dist/constants.d.ts
+++ b/shared/dist/constants.d.ts
@@ -19,6 +19,7 @@ export declare const SLEEP_ENERGY_RECOVERY_PER_TICK = 0.048;
 export declare const SLEEP_HUNGER_DECAY_MULTIPLIER = 0.5;
 export declare const SLEEP_WAKE_THRESHOLD = 85;
 export declare const SLEEP_VOLUNTARY_ENERGY_THRESHOLD = 60;
+export declare const NAP_BUFFER = 15;
 export declare const SLEEP_NIGHT_START = 0.667;
 export declare const PRODUCTIVITY_DECAY_PER_TICK = 0.02;
 export declare const PRODUCTIVITY_THRESHOLD = 40;
diff --git a/shared/dist/constants.js b/shared/dist/constants.js
index b4fd164..60d90f7 100644
--- a/shared/dist/constants.js
+++ b/shared/dist/constants.js
@@ -21,6 +21,7 @@ export const SLEEP_ENERGY_RECOVERY_PER_TICK = 0.048; // ~80 energy over one nigh
 export const SLEEP_HUNGER_DECAY_MULTIPLIER = 0.5; // hunger decays at half rate while sleeping
 export const SLEEP_WAKE_THRESHOLD = 85; // energy level where waking chance begins
 export const SLEEP_VOLUNTARY_ENERGY_THRESHOLD = 60; // nighttime voluntary sleep threshold
+export const NAP_BUFFER = 15; // energy buffer above minimum for daytime naps
 export const SLEEP_NIGHT_START = 0.667; // gameTime when night begins (DAY_HOURS/TOTAL_HOURS)
 // Productivity need
 export const PRODUCTIVITY_DECAY_PER_TICK = 0.02;
diff --git a/shared/dist/types.d.ts b/shared/dist/types.d.ts
index 83a927a..f0a358b 100644
--- a/shared/dist/types.d.ts
+++ b/shared/dist/types.d.ts
@@ -273,6 +273,7 @@ export interface TunableConstants {
     SLEEP_HUNGER_DECAY_MULTIPLIER: number;
     SLEEP_WAKE_THRESHOLD: number;
     SLEEP_VOLUNTARY_ENERGY_THRESHOLD: number;
+    NAP_BUFFER: number;
     PRODUCTIVITY_DECAY_PER_TICK: number;
     PRODUCTIVITY_THRESHOLD: number;
     PRODUCTIVITY_RECOVERY_RATE: number;
diff --git a/shared/src/constants.ts b/shared/src/constants.ts
index 0d97e23..b7094f1 100644
--- a/shared/src/constants.ts
+++ b/shared/src/constants.ts
@@ -23,6 +23,7 @@ export const SLEEP_ENERGY_RECOVERY_PER_TICK = 0.048; // ~80 energy over one nigh
 export const SLEEP_HUNGER_DECAY_MULTIPLIER = 0.5;    // hunger decays at half rate while sleeping
 export const SLEEP_WAKE_THRESHOLD = 85;              // energy level where waking chance begins
 export const SLEEP_VOLUNTARY_ENERGY_THRESHOLD = 60;  // nighttime voluntary sleep threshold
+export const NAP_BUFFER = 15;                        // energy buffer above minimum for daytime naps
 export const SLEEP_NIGHT_START = 0.667;              // gameTime when night begins (DAY_HOURS/TOTAL_HOURS)
 
 // Productivity need
diff --git a/shared/src/types.ts b/shared/src/types.ts
index 4c4e44b..1ea7d81 100644
--- a/shared/src/types.ts
+++ b/shared/src/types.ts
@@ -285,6 +285,7 @@ export interface TunableConstants {
   SLEEP_HUNGER_DECAY_MULTIPLIER: number;
   SLEEP_WAKE_THRESHOLD: number;
   SLEEP_VOLUNTARY_ENERGY_THRESHOLD: number;
+  NAP_BUFFER: number;
   PRODUCTIVITY_DECAY_PER_TICK: number;
   PRODUCTIVITY_THRESHOLD: number;
   PRODUCTIVITY_RECOVERY_RATE: number;