Yoga advice for periods

Hi... From what i learn in my yoga class, you aren't suppose to do inverted postures (shoulder stand, head stand) during your period as this will disrupt your period flow. Which is most likely true??
(21 May 2007)

Yes, the advice you received is absolutely right, we go along with it and we suggest you do too. Meanwhile you will find useful reading at this URL: http://www.yogawiz.com/health-issues-and-yoga/yoga-for-menstrual-cramps.html

Take care and all the best.