diff --git a/src/world/hud.c b/src/world/hud.c
index 0840853..8efa499 100644
--- a/src/world/hud.c
+++ b/src/world/hud.c
@@ -110,6 +110,10 @@ static void drawHealth(void)
 	w = world.bob->health * 12;
 	
 	drawRect(65, 8, w, 18, 0, 225, 0, 255);
+	if (world.frameCounter % 60 < 30 && getPercent(world.bob->health, world.bob->healthMax) <= 33)
+	{
+		drawRect(65, 8, w, 18, 255, 225, 255, 255);
+	}
 	
 	w = world.bob->healthMax * 12;
 	
diff --git a/src/world/hud.h b/src/world/hud.h
index d2d5621..c35f43c 100644
--- a/src/world/hud.h
+++ b/src/world/hud.h
@@ -29,6 +29,7 @@ extern int getWrappedTextHeight(const char *text, int size);
 extern void blitRectScaled(SDL_Texture *texture, int x, int y, int w, int h, SDL_Rect *srcRect, int center);
 extern Texture *getTexture(const char *filename);
 extern SDL_Rect getCurrentFrame(Sprite *s);
+extern int getPercent(float current, float total);
 
 extern Dev dev;
 extern Camera camera;