: Understanding the biological functions and anatomical details of both partners.
: It offered thorough descriptions of preliminaries (foreplay) and the after-effects of coitus , stressing that the act does not end at climax.
: Van de Velde detailed eleven distinct positions for intercourse, categorizing them based on the physical and psychological needs of the couple. Ideal Marriage: Its Physiology and Technique
: Balancing the emotional and mental hygiene of the relationship.
: He unreservedly condemned practices like coitus interruptus , citing the negative physiological and psychological impact on women. Historical Legacy : Balancing the emotional and mental hygiene of
The book provided detailed, clinical instructions that were once considered scandalous:
Van de Velde structured his work around four "cornerstones" essential for a harmonious union: Ideal Marriage: Its Physiology and Technique
: The text explored the role of "olfactory sexual impressions" and other sensory stimuli in attraction.