Taoism was the first philosophy to take human sexuality fully into account, to present it in such a way that people couold use their sexual energy to transform themselves. Taoist Sexology directs people so they can enjoy sexual play without depleting themselves, explains how to strengthen the sexual organs and use sexual energy to cure specific ailments, strengthens the bond of love, elucidates various positions of therapeutic intercourse, provides natural methods of family planning and eugenics even includes way of selecting the sex of your child.