Does Postural Drainage help in coronavirus treatment ?

Postural drainage involves a combination of techniques, including multiple positions to drain the lungs, percussion, vibration, deep breathing, and coughing. Chest Physiotherapy, including postural drainage and percussion techniques,  allows gravity to remove mucus build-up in the lungs in COVID -19 patients with respiratory distress. These techniques  also help open up both the airways and get more oxygen into air sacs and improve circulation to the lungs.”