Spiritual concepts
Yin Heel vessel
The Yin Heel vessel intersects with the kidney channel.
The Chinese system states that the main source for the Yin heel vessel are the testicles and a large part of a number of techniques is based on the stimulation of the testicles in order to increase the amount of energy you have in the lower Dan Tien.
As long as all the channels are free and unobstructed, there is linked energy from the Governing [yang] , Conception [yin] and Thrusting vessels, with the thrusting vessel going up the marrow and a pool of vital energy being present around the kidney area.