diff --git a/src/main/java/com/minelittlepony/unicopia/USounds.java b/src/main/java/com/minelittlepony/unicopia/USounds.java
index bd2601b1..11cf2f53 100644
--- a/src/main/java/com/minelittlepony/unicopia/USounds.java
+++ b/src/main/java/com/minelittlepony/unicopia/USounds.java
@@ -13,6 +13,7 @@ public interface USounds {
     SoundEvent ENTITY_PLAYER_CHANGELING_BUZZ = register("entity.player.changeling.buzz");
 
     SoundEvent ENTITY_PLAYER_EARS_RINGING = register("entity.player.ears_ring");
+    SoundEvent ENTITY_PLAYER_HEARTBEAT = register("entity.player.heartbeat");
 
     SoundEvent ITEM_MAGIC_AURA = register("item.magic.aura");
 
diff --git a/src/main/java/com/minelittlepony/unicopia/client/gui/UHud.java b/src/main/java/com/minelittlepony/unicopia/client/gui/UHud.java
index 05b81900..33a25915 100644
--- a/src/main/java/com/minelittlepony/unicopia/client/gui/UHud.java
+++ b/src/main/java/com/minelittlepony/unicopia/client/gui/UHud.java
@@ -6,11 +6,13 @@ import java.util.Random;
 import org.jetbrains.annotations.Nullable;
 
 import com.minelittlepony.unicopia.Race;
+import com.minelittlepony.unicopia.USounds;
 import com.minelittlepony.unicopia.ability.AbilityDispatcher;
 import com.minelittlepony.unicopia.ability.AbilitySlot;
 import com.minelittlepony.unicopia.ability.magic.spell.DisguiseSpell;
 import com.minelittlepony.unicopia.ability.magic.spell.SpellType;
 import com.minelittlepony.unicopia.client.KeyBindingsHandler;
+import com.minelittlepony.unicopia.client.sound.LoopingSoundInstance;
 import com.minelittlepony.unicopia.entity.behaviour.Disguise;
 import com.minelittlepony.unicopia.entity.effect.SunBlindnessStatusEffect;
 import com.minelittlepony.unicopia.entity.effect.UEffects;
@@ -22,10 +24,9 @@ import net.minecraft.client.font.TextRenderer;
 import net.minecraft.client.gui.DrawableHelper;
 import net.minecraft.client.gui.hud.InGameHud;
 import net.minecraft.client.gui.screen.ingame.InventoryScreen;
-import net.minecraft.client.sound.PositionedSoundInstance;
 import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.entity.EntityDimensions;
-import net.minecraft.sound.SoundEvents;
+import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.text.Text;
 import net.minecraft.util.Arm;
 import net.minecraft.util.Identifier;
@@ -57,6 +58,9 @@ public class UHud extends DrawableHelper {
 
     int xDirection;
 
+    @Nullable
+    private LoopingSoundInstance<PlayerEntity> heartbeatSound;
+
     public void render(InGameHud hud, MatrixStack matrices, float tickDelta) {
 
         if (client.player == null) {
@@ -182,14 +186,20 @@ public class UHud extends DrawableHelper {
         float exhaustion = pony.getMagicalReserves().getExhaustion().getPercentFill();
 
         if (exhaustion > 0) {
-            if (tickDelta == 0) {
-                client.getSoundManager().play(PositionedSoundInstance.master(SoundEvents.BLOCK_ANVIL_BREAK, 1));
+            if (exhaustion > 0.5F && (heartbeatSound == null || heartbeatSound.isDone())) {
+                client.getSoundManager().play(
+                        heartbeatSound = new LoopingSoundInstance<>(client.player, player -> {
+                            return Pony.of(player).getMagicalReserves().getExhaustion().getPercentFill() > 0.5F;
+                        }, USounds.ENTITY_PLAYER_HEARTBEAT, 1, 1)
+                );
             }
 
             int color = 0x880000;
 
-            float radius = (1 + (float)Math.sin(client.player.age / 7F)) / 2F;
-            radius = 0.14F + radius * 0.2F;
+            float rate = exhaustion > 0.5F ? 2.5F : 7F;
+
+            float radius = (1 + (float)Math.sin(client.player.age / rate)) / 2F;
+            radius = 0.1F + radius * 0.1F;
 
             int alpha1 = (int)(MathHelper.clamp(exhaustion * radius * 2, 0, 1) * 205) << 24 & -16777216;
             int alpha2 = 0;
diff --git a/src/main/resources/assets/unicopia/lang/en_us.json b/src/main/resources/assets/unicopia/lang/en_us.json
index ef59783a..d2d8c94e 100644
--- a/src/main/resources/assets/unicopia/lang/en_us.json
+++ b/src/main/resources/assets/unicopia/lang/en_us.json
@@ -385,6 +385,10 @@
   "unicopia.subtitle.slime_retract": "Sqonk",
   "unicopia.subtitle.changeling_buzz": "Drone Buzzing",
   "unicopia.subtitle.batpony_eeee": "Batpony Screeches",
+  "unicopia.subtitle.magic_aura": "Magic Humming",
+  "unicopia.subtitle.player.rebound": "Player Bounces Off Wall",
+  "unicopia.subtitle.ears_ring": "Ears Ringing",
+  "unicopia.subtitle.heartbeat": "Heart Beats",
 
   "advancements.unicopia.root.title": "Unicopia",
   "advancements.unicopia.root.description": "A world of magic and adventure",
diff --git a/src/main/resources/assets/unicopia/sounds.json b/src/main/resources/assets/unicopia/sounds.json
index 0a308d50..86e9a97e 100644
--- a/src/main/resources/assets/unicopia/sounds.json
+++ b/src/main/resources/assets/unicopia/sounds.json
@@ -11,12 +11,14 @@
   },
   "item.magic.aura": {
     "category": "player",
+    "subtitle": "unicopia.subtitle.magic_aura",
     "sounds": [
       "unicopia:aura/aura0"
     ]
   },
   "entity.player.rebound": {
     "category": "player",
+    "subtitle": "unicopia.subtitle.player.rebound",
     "sounds": [
       "unicopia:boing/boing0",
       "unicopia:boing/boing1",
@@ -50,6 +52,13 @@
       "unicopia:ears/ringing"
     ]
   },
+  "entity.player.heartbeat": {
+    "category": "ambient",
+    "subtitle": "unicopia.subtitle.heartbeat",
+    "sounds": [
+      "unicopia:heartbeat/heartbeat"
+    ]
+  },
   "ambient.wind.gust": {
     "category": "ambient",
     "subtitle": "unicopia.subtitle.wind_rush",
@@ -72,7 +81,7 @@
   },
   "record.pet": {
     "category": "blocks",
-  "stream": true,
+    "stream": true,
     "sounds": [
       { "name": "unicopia:record/pet", "stream": true}
     ]
diff --git a/src/main/resources/assets/unicopia/sounds/heartbeat/heartbeat.ogg b/src/main/resources/assets/unicopia/sounds/heartbeat/heartbeat.ogg
new file mode 100644
index 00000000..4dd5a73f
Binary files /dev/null and b/src/main/resources/assets/unicopia/sounds/heartbeat/heartbeat.ogg differ