It is so funny that you ask this because I am 44 yrs old I have been working out on and off for a few years now, but since about 2 years ago until now everytime I worked out regularly I would get a heavier period. I don't wear an IUD or any type of contraceptive, so that isn't it. I guess cause of my age, weight and genes I have problems with skipping my period then it coming on like gangbusters are to be expected. But the crazy part is that I stop workign out and I skip my period for a few months or I get it and it isn't too heavy or heavy, but not insane. But then I work out and boy it is like the Hoover Dam to the point that I have to stop working out for the whole time which is usually 3-4 weeks of hemorraghing then it stops. I only get to work out for 2 weeks in a month, cause I get it for 3-4 weeks, it takes me weeks to get back into the groove and here I am again. Not sure if my experience is anything like yours, but maybe. I have seen a gyne and she said she could do a procedure to remove the lining of my uterus so that I wouldn't get my periord. But if she slips she could perforate my uterus and then forget it. So I deal w/it for now and hope the menopause will kick in soon. Would like to hear more about your issues. Glad to know I'm not nuts. I thought the working out, bleed to death thing was all in my head. BTW, stress has a lot to do with it too. Goin through a lot right now financially and lately we got a little help and poof it stopped that day. I don't think it was a coincidence.