===================================================================
--- original.js
+++ change.js
@@ -80,8 +80,28 @@
 			self.destroy();
 		}, 300);
 	};
 });
+// Health class
+var Health = Container.expand(function () {
+	var self = Container.call(this);
+	self.lives = 3;
+	var heartGraphics = [];
+	for (var i = 0; i < self.lives; i++) {
+		heartGraphics[i] = self.createAsset('heart', 'Health heart', 0, 0);
+		heartGraphics[i].x = i * (heartGraphics[i].width + 10);
+		heartGraphics[i].y = 0;
+	}
+	self.loseLife = function () {
+		if (self.lives > 0) {
+			self.lives--;
+			heartGraphics[self.lives].visible = false;
+			if (self.lives === 0) {
+				LK.showGameOver();
+			}
+		}
+	};
+});
 
 /**** 
 * Initialize Game
 ****/
@@ -115,8 +135,12 @@
 // Initialize player2
 var player2 = game.addChild(new Player2());
 player2.x = 2048 / 2;
 player2.y = 2732 - 50; // Positioned at the bottom of the screen, same as player
+// Initialize health meter
+var health = game.addChild(new Health());
+health.x = 10;
+health.y = 10;
 
 // Initialize apples array
 var apples = [];
 
@@ -149,9 +173,9 @@
 	}
 	// Move apples
 	for (var i = apples.length - 1; i >= 0; i--) {
 		apples[i].move();
-		// Check if apple is caught by the player
+		// Check if apple is caught by the player or if a green apple hits the player
 		if (apples[i].isCaught(player, player2)) {
 			// Increase score
 			LK.setScore(LK.getScore() + 1);
 			// Show explosion at the apple's position only if it's not a green apple
@@ -163,9 +187,13 @@
 			// Remove caught apple
 			apples[i].destroy();
 			apples.splice(i, 1);
 		} else if (apples[i].y > 2732) {
-			// Remove apple if it falls off the screen
+			// Decrease health if a green apple hits the player
+			if (apples[i] instanceof GreenApple && apples[i].y > player.y) {
+				health.loseLife();
+			}
+			// Remove apple if it falls off the screen or if it hits the player
 			apples[i].destroy();
 			apples.splice(i, 1);
 		}
 	}