opening the eyes wide and gnashing the teeth because these are tried-and-true Taoist methods for drawing vital-energy upwards to the head and away from the sexual organs, especially when combined with deep breathing. In addition to constricting the anal sphincter, he also suggests the method of pressing a vital point called ‘Confluence of Yin’, which is located midway between the anus and the scrotum. Pressure here tends to suppress ejaculation.