Right now you are in front of the treadmill, now turn back, you will find two open doors, now exit from the room, now you will find bottles in front of you, now go straight, you will find closed door in front of you, now take right, and keep moving forward, on the left side, you will find stair case, now walk all the way to the top of the stairs, there you will find closed door in front of you, go and stand in front of the door, and turn left, you will find portrait on the wall, now go straight, and take right, you will find two open doors, now enter into the room, on the left side you will find black board,  go and stand in front of the board, that will be your final destination.