Real life effects of menstrual cycle
What an amazing study: Researchers measured the income of professional lap dancers. They then correlated it with the period in their menstrual cycle and found that fertile women had an increase in their income. But only if they did not use contraceptive pills.
No explanation on dancing technique is necessary, although it might be interesting to pursue.
The study by Miller and colleagues shows that there is estrus in modern human females in an real world setting.