The hand is cupped by holding the fingers together so that the shape of the cupped hand conforms with the chest wall. The cupped hand tends to trap a cushion of air which softens the blow of the clapping. Clapping should be vigorous but not painful. Clapping should not be done on bare skin, but over soft comfortable clothing or towels. Rings should be removed before clapping.
Ribs are strong and flexible but can be broken by a blow with the hand.
The cupping technique cushions the blow of the hand during clapping by trapping air between the hand and chest wall. Vibration Vibration is more difficult than clapping, but is valuable because it helps stimulate the flow of secretions. Deep Breathing Deep breathing assists in the movement of secretions and may stimulate coughing. A forced but not strained exhalation following a deep inhalation may move secretions and may stimulate a productive cough. An effective cough is an essential part of clearing the airways.