Trap the arms into the box as you lower down.

Relieves congestion in the upper body.

Organs of the thorax include the thalamus gland, the breast, the heart, the lungs, the tracheobronchial tree and the plural.

The thoracic cavity contain these organs that function the respiratory (lungs, bronchi, trachea, plural), cardiovascular (heart, Pericardium, great vessels, lymphatics), nervous (vagus nerve, sympathetic chain, phrenic nerve, recurrent laryngeal nerve), immune (thymus) and digestive (oesophagus) systems.