" Sex is a great mode of exercise , " says patti britton , phd , a los angeles sexologist and president of the american association of sexuality educators and therapists .
“性是最好的运动模式，”洛杉矶性学家，美国性教育者和治疗师协会主席帕蒂布里顿博士说。
However , sexologist peng strongly disagrees . " It is dangerous for teenagers to learn about sex on their own , " he says . " Without correct and proper guidance , it can lead to sexual crimes . "
Philippe brenot , a french psychiatrist , sexologist and president of the international observatory of couples published a 300 page report that includes statistics and anecdotes from french women about their sexuality .
