The Menstrual Cycle
The menstrual cycle lasts on average 28 days and ovulation takes place somewhere in the middle. Most women are probably only aware of their menstrual cycle in terms of their period but when pressed they may also have noticed the influence of their changing hormones during their cycle on their overall wellbeing. PMS just before a period, a feeling of confidence around the time of ovulation or the famous hot flushes of perimenopause are good examples of this.