Lisa Hendrickson-Jack is a certified Fertility Awareness Educator and Holistic Reproductive Health Practitioner who teaches women to chart their menstrual cycles for natural birth control, conception, and monitoring overall health.

In her bestselling book The Fifth Vital Sign, Lisa debunks the myth that regular ovulation is only important when you want children by recognizing the menstrual cycle as a vital sign.

Drawing heavily from the current scientific literature, Lisa presents an evidence-based approach to fertility awareness and menstrual cycle optimization.

She hosts the Fertility Friday Podcast, a weekly radio show devoted to helping women connect to their fifth vital sign by uncovering the connection between menstrual cycle health, fertility, and overall health.