Time of Day  03:00-05:00 am (peak activity)
Directly related to respiration.
Indirectly to the heart & circulation.
Governs Qi & respiration, extracting pure Qi from the- environment & excreting dirty Qi.
Forms Qi in the chest along with stomach and spleen, this is the basis of Defensive & nutritive Qi, which the lung distributes Qi through out the body.
Controls channels and blood vessels
Disperses and descends Qi and body fluids
Controls skin & hair and opens into the nose
Houses the corporeal Soul.

Lung [Yin] Metal