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Can Exercise Affect Your Menstrual Cycle?

Exercise is the closest thing to a magical pill since it keeps you healthy in so many ways. Aside from helping you drop pounds and look sensational sporting your tightest pants, it keeps your heart healthy, improves your mood and energy levels, keeps sickness at bay, can prevent injuries or alleviate chronic pain, and can even help you have a better night's sleep.

Working out may also help when Aunt Flo comes for her monthly visit. If you suffer from bloating or gut-wrenching cramps (dysmenorrhea) — even though you may not feel up to your normal workout — walking, swimming, or doing another type of light exercise like yoga will improve circulation to relieve painful cramps and ease digestive distress (try these yoga poses that ease cramps). The release of endorphins from exercise is also helpful in getting rid of headaches, fatigue, and your cranky, I-want-to-throw-something-at-everyone mood. Getting your sweat on may also curb your insatiable cravings for junk food and prevent monthly weight gain.

Related: Sip Away PMS Symptoms With This Chocolate Cashew Smoothie

Unfortunately, exercise can also have a negative effect on your period. If you're exercising excessively or obsessively, and have a lower percentage of body weight than is normal for your height (possibly from anorexia), your body could go into rescue mode. Working out takes a ton of energy, so in order for your body to keep up it will begin to shut down unnecessary functions to use what little energy it has to keep your basic life functions going. Since menstruation's main purpose is for reproduction, it is not vital to you and your body will turn off the function to save energy. The good news is that usually when you begin cutting down on the exercise and your body gets the nutrition and calories it needs, your periods should come back. Likewise, if your body fat percentage is much higher than the normal level for your height, periods can also stop.

Exercise and body weight aren't the only things that can affect your cycle, and a missing period isn't a disease, it's a symptom. If you're suffering from irregular or missed periods, make an appointment with your gynecologist so they can help you figure out how to get your period back.

Related: You're Not Going to Like What Experts Say to Avoid When It Comes to PMS

Image Source: POPSUGAR Photography / Ericka McConnell
Lindsay14860139 Lindsay14860139 4 years
@CT23 Even 1600-2100 calories per day is very low, especially if you're at all active. Your metabolism is likely suppressed from an extended period of undereating. I'm betting that if you ate more regularly, you might gain weight short term but in the long run your metabolism would speed up and you would have regular periods which is a sign of health.
thehilside thehilside 4 years
I've been exercising and eating very well, and have noticed that my last 2 periods have given me NO pms symptoms. Absolutely none!
Iamlove Iamlove 10 years
ishop2much, sounds right. Do you still exercise? How much, intensity, time, etc? I have only seen this happen when exercise is added.
ishop2much ishop2much 10 years
I'm naturally thin, but when I was running a lot in high school for sports, mine actually stopped. So it's not necessarily obesity. Once I stopped running so much, it came back.
GeikoSera GeikoSera 10 years
Yeah, color me confused with the amenorrhea. I've been trying to solve this mystery for a bit now. :/
LaLaLaurie06 LaLaLaurie06 10 years
I find that exercise actually makes my period heavier right after I do it. PLUS I get bad stomach cramps. So, am I the exception to this rule?
CT23 CT23 10 years
I try to eat 1200 calories a day, but usually end up eating 1600-2100 most days. I also exercise 25-45 minutes 5-7 days a week. I never get my period when I eat like this (the last 4 years). As soon as I have a "bad few days" where I feel like I overeat (2500-3500 calories a day for a few days in a row) I automatically get my period. I'm 138 and 5'6", body fat 24%, and I want to lose at least 15 pounds, it seems like I can't possibly eat more to get my period while still losing weight. Anyone in a similar situation? Thanks!
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