A mannequin for practicing cardiopulmonary resuscitation and a kit for assembling the mannequin for practicing cardiopulmonary resuscitation, the mannequin comprising a head having an inlet, a chest portion, a plate pivotably coupled to the chest portion, and an air collecting portion comprising an air chamber, an end of the air collecting portion being coupled to the inlet and the air chamber being disposed between the plate and the chest portion such that the plate pivots away from the chest portion when air is blown into the air chamber through said inlet and the plate pivots towards the chest portion when air is released from the air chamber.