arieman30
May 31, 2012, 01:40 AM
I've been working out for about a week now I missed my period why? Please help
joypulv
May 31, 2012, 02:25 AM
If you aren't pregnant, there are many possible reasons, but a common one is because of strenuous activity. It's natures way of keeping blood available for survival, such as fighting or fleeing or long forays for food.