Does starting a new exercise program effect your menstrual cycle?
141375
I don't think that it's normal. The only well-documented effect exercise has on the menstrual cycle (that I know of) is amenorrhea. Amenorrhea is when the menstrual cycle essentially stops because there is too little fat in the woman's body for the hormones to be effective. This case is somewhat common in elite athletes, particularly gymnasts. I second the suggestion to talk to your doctor about it.
995199
I know that exercise can delay periods.  Try running everyday until your trip.  It might not work if there isn't enough time for your body to adjust, but I have a friend who works out almost everyday and she has very light to no period at all
548734
yes, the less body fat you have in your body the less of a period you have. i am not a doctor so i would suggest consulting one on if this is ok or not.
322668
If that is not a normal occurence, keep in mind that stress, going of birth control, sudden weight loss or gain,  or increased physical activity can screw up your cycle in a major way. See what happens next month. If it doesn't straighten out - go to your OBGYN and have a Pap done.
251899
Lots of women are interested in keeping track of their cycles and it is really a GOOD thing to do.. over time.  I was always taught that I was supposed to pull up my dates from years ago to current.  They show trends and stuff.. and menstrual cycle is a very important part of a woman's health history.  :)
394419
I'm going through the same thing right now and know for a fact that I'm not pregnant, (having been sexually active in a long time), so I know that stress and exercise can cause dramatic changes in your cycle. Don't worry. Doctor's appointment is a good idea. Happened to me once before and when it started up again, it lasted two weeks, (that really sucked). It will be OK. You're probably just stressing about a test or job, etc. and don't even realize it.
574890
I have never heard of not exercising during this time.\n\nI exercise all the time and have never had any problems. Actually when I exercise during that time of the month,it helps to alleviate some of the symptoms of pain,cramping,and bloating.\n\nDon't know where you got your idea from,but I see nothing wrong with exercise at any time.
476077
There are many problems associated with over-exercising. Too much exercising, like too little food can slow down your body's metabolism. When over-exercise is combined with dieting, your metabolism slows down even more. This means your body will start to burn calories more slowly; which for people who are trying to tone-up or trim-down is exactly the opposite of what they want.\n\nFor women, the effects of over-exercise and food reduction can lead to amenorrhea, which is defined as less than three periods a year. A woman who is not menstruating regularly suffers from a depletion of female hormones, especially estrogen. This interferes with the normal metabolism of calcium in the body which will eventually lead to a rapid loss of bone density. Osteoporosis a bone disease in which the bones become more porous and brittle can develop in mid-life as a result of restricting calcium intake through dieting.\n\nFor men and women, the combination of over-exercising and dieting can lead to depressed thyroid activity, disturbed sleep patterns, loss of ability to concentrate, depression, irritability and a depressed immune system. If you have inadequate energy intake and excessive energy output, you may start to burn healthy lean muscle mass tissue for energy. Your ability to maintain intense physical activity therefore decreases, rather than improves.
818491
Do you exercise a lot and/or strenuously?  have you been dieting?  If a woman doesn't have a reasonable percentage of body fat, her periods will stop.  You might also have your thyroid checked.  I had the opposite problem -- a period for 72 days, and it turned out I had Thyroid disease.\n\nNo matter what the reason, you should probably have a check-up.  Something's not right...\n\nGood luck!
757112
This is perfectly normal.  Sodas are not good for you in general, but they wouldn't have this effect on menstruation.\n\nYou answered your own question.  Stress messes with all your systems, and a woman's cycle is usually the most vulnerable and obvious.  You could have also lifted something heavy and this speeded up extra discharge for a little while.  That happens to me whenever I lift heavy things on my period.
199135
I am not aware of any studies on that, however logically I think that if you are fat, your menstrual cycles will tend to be anovulatory. Hence I would expect infertility rates to be higher in people who eat more calories per day (and do not compensate for it by exercising more).
377102
no it sometimes happens before a period and if u put on weight.
502635
Most premenopausal women experience changes in their menstrual cycle. When estrogen levels begin to drop, the follicular phase of the cycle may be shortened, and this can shorten the total cycle from 28–30 days to 24–26 days, resulting in more frequent periods. On the other hand, some women begin having longer cycles because they are not ovulating as frequently. These changes can be quite different on an individual basis. Additionally, this declining/fluctuating estrogen level can produce a host of disturbing symptoms: hot flashes, increasing vaginal dryness, sleep problems, mood swings, breast tenderness and many other complications. \n\nThere is a relatively small number of women who hardly notice any changes before menopause. Their periods just stop overnight with few, if any, symptoms.\n\nAnother small percentage of women experience significant, dramatic symptoms that, when left untreated, ultimately lead to surgical intervention. Many women find at this time too many physicians strongly urging surgery and failing to provide information about the alternatives to, and consequences of, hysterectomy.
850431
Nope. It can reduce cramps during your period. Also, an orgasm can give your period a jump start so, if you are pmsing and need your period to start now instead of tommorow, have fun!
1157337
When you first start an exercise program you are likely to find yourself getting stiff and sore. After you have been doing the program for a good period of time it should become easier. If for some reason you think it is a medical issue then you should contact your doctor.
751542
Here's a great link to an article all about the menstrual cycle. Happy reading! :)\n\nhttp://www.webmd.com/hw/healthy_women/tn9931.asp
817611
I think your cycle is longer than 28 days and I think that your menses should start before you decide which answer to pick as the best.  You will probably start somewhere around the 22-23rd.