Art de vivre sa fertilité is a French guide that presents a sympto‑thermique method for natural regulation of fertility. The book explains how to monitor body temperature and other physiological cues to predict ovulation and manage reproductive health without pharmaceuticals. Written by Joseph Rotzer, it offers practical advice, charts, and case studies aimed at couples seeking a natural approach to family planning. The 128‑page paperback, published by Nouvelle cité in 1999, is intended for readers interested in alternative fertility methods and holistic health practices.