托妮•維斯勒是美國知名女性健康教育傢及講師，周期避孕法的開創者。

1986年她創立瞭“生育意識法及訓練講座”，多年陸續受邀至各大醫院、診所及大學進行演講，並協助開發瞭用於計算女性生理周期的計算軟件，至今仍被廣範應用。

她著有《周期的悟性：為少女解開身體的秘密》等享譽世界的女性健康讀物，常做客各大電視節目、互聯網、廣播節目。

當當預售：http://t.cn/8sEYCVP

Celebrating 10 years of helping hundreds of thousands of women achieve pregnancy, avoid pregnancy naturally, and gain better control of their health and lives, the 10th Anniversary Edition of the classic bestseller will include:

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