Scared that her biological clock is going tick tick tick boom.
Hmmm, do we hear someone's male biological clock ticking?
It regulates your biological clock and sleep-wake cycle.
Do I feel pressured into a choice by my biological clock?
The female biological clock is still geared towards an ancient rhythm of life, where life expectancy was half of what it is now and women began having babies only a few years after their first menstrual cycles.