diff --git a/src/main/java/com/atsuishio/superbwarfare/client/ClickHandler.java b/src/main/java/com/atsuishio/superbwarfare/client/ClickHandler.java
index d61fc025f..bcea6d13d 100644
--- a/src/main/java/com/atsuishio/superbwarfare/client/ClickHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/client/ClickHandler.java
@@ -199,6 +199,9 @@ public class ClickHandler {
 
             if (key == Minecraft.getInstance().options.keyJump.getKey().getValue()) {
                 handleDoubleJump(player);
+                if (player.onGround()) {
+                    stamina += 5;
+                }
             }
 
             if (key == ModKeyMappings.RELOAD.getKey().getValue()) {
@@ -389,6 +392,7 @@ public class ClickHandler {
         ClientEventHandler.zoom = false;
         ClientEventHandler.zoomVehicle = false;
         ClientEventHandler.entity = null;
+        breath = false;
     }
 
     private static void editModelShake() {
diff --git a/src/main/java/com/atsuishio/superbwarfare/event/ClientEventHandler.java b/src/main/java/com/atsuishio/superbwarfare/event/ClientEventHandler.java
index 7a12b988a..a2cd4e7d1 100644
--- a/src/main/java/com/atsuishio/superbwarfare/event/ClientEventHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/event/ClientEventHandler.java
@@ -295,12 +295,14 @@ public class ClientEventHandler {
 
     //耐力
     public static void staminaSystem() {
+        if (notInGame()) return;
+
         LocalPlayer player = Minecraft.getInstance().player;
         if (player == null) {
             return;
         }
 
-        tacticalSprint = !exhaustion && !zoom && isMoving() && player.isSprinting() && player.getVehicle() == null && player.onGround();
+        tacticalSprint = !exhaustion && !zoom && isMoving() && player.isSprinting() && player.getVehicle() == null && player.onGround() && !player.getAbilities().flying;
 
         ItemStack stack = player.getMainHandItem();
 
@@ -331,7 +333,7 @@ public class ClientEventHandler {
             exhaustion = false;
         }
 
-        if ((ModKeyMappings.BREATH.isDown() && zoom) || tacticalSprint) {
+        if ((ModKeyMappings.BREATH.isDown() && zoom) || (tacticalSprint)) {
             switchTime = Math.min(switchTime + 0.65, 5);
         } else if (switchTime > 0 && stamina == 0) {
             switchTime = Math.max(switchTime - 0.15, 0);