Strippers earn more when they ovulate and are not on the pill

I've heard from lady friends of mine that they notice a considerable increase in number of come-ons and check outs during the ovulation part of their menstrual cycles. They generally attribute it to a pheromone thing, and I'm inclined to believe them without the scientific evidence to back it up. But now, here's some evidence.

Pyschology Today has published this study of New Mexico strip club employees that makes a strong link between ovulation and tips. An excerpt from the article...

Dancers made about $70 an hour during their peak period of fertility, versus about $35 while menstruating and $50 in between.

What blew me away was this:

Women on the pill averaged $37 (and had no performance peak) versus $53 for women off-pill. The contraceptive produces hormonal cues indicating early pregnancy, not an enticing target for a would-be suitor. Birth control could lead to many thousands of dollars lost every year.

This is fascinating stuff - and I definitely sent this article around those friends who noticed the difference over their period. I wonder if they've noticed a difference on the pill. Have any of our faithful readers noticed a difference in your pheromone output since you've been on the pill?