Right now you're facing towards the treadmill, turn slight left you'll see an open door which is in front of you, move towards the open door, turn left and exit from the open door. You'll see narrow passage and walk all the way from the narrow passage. You'll see closed door which is in front you, turn right you'll see an open arch, move towards the open arch and turn right you'll see an open door. Move towards the open door, turn right and go inside. Move forward you'll see black chair and stand near the black chair and that is your end point.