diff --git a/server/gameserver/player.cc b/server/gameserver/player.cc
index 98966634..393a43aa 100644
--- a/server/gameserver/player.cc
+++ b/server/gameserver/player.cc
@@ -43,6 +43,18 @@ void Player::Initialize()
     if (room->IsInfiniteBulletMode()) {
         SetInfiniteBulletMode();
     }
+#ifdef DEBUG
+    room->xtimer.AddDeadLineTimerAndAttach
+        (SERVER_FRAME_RATE * 10,
+         a8::XParams()
+         .SetSender(this),
+         [] (const a8::XParams& param)
+         {
+             Human* hum = (Human*)param.sender.GetUserData();
+             hum->SetHP(hum->GetHP() - 100);
+         },
+         &xtimer_attacher.timer_list_);
+#endif
 }
 
 void Player::Update(int delta_time)