Sex efficiency through exercises : special physical culture for women / by Th. H. van de Velde ; [photos, by E. Steinemann].
113/426

and changes of inclination, though less so than equitation, as has already been pointed out. For woman has a far wider register of coital, or sexual, sensation and of variation therein at her disposal than man. His specifically sexual pleasure is very highly localised, and his power of modification here is very limited and practically in only one manner. But woman has a threefold choice : she can perform the same type of movement as the man ; or she can exercise the rotating movement described in equitation ; or she can undulate and vibrate her perivaginal muscles. But, without knowledge or previous practice, she generally fails to attempt either the second or the third and her efforts at the backward and forward pelvic swing are, only too often, so clumsy that they merely serve to impair and hinder the distinctive male action in coitus ! Or else she is merely passive ! Sex efficiency by means of pelvic exercise gives her command and choice of delights in union, thus serving not only her own happiness and health, but, and equally, her mates as well.