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ArticlesTopic 05

Periods

Leaks, heavy days, stains and surprises. A calm plan for every part of the month.

167 articles

  • PeriodsExplainer

    Periods Every 2 or 3 Weeks in Your 40s: When Shorter Cycles Are Normal

    Shorter cycles are often the first sign of the years before menopause. The international staging system for reproductive aging lists them at the very start. ACOG still counts cycles shorter than 21 days as abnormal bleeding worth an appointment. Here is where short cycles fit, how to count them, and what to bring.

    2 min read

  • PeriodsExplainer

    Sex on Your Period: Pregnancy, STIs and What Studies Found

    Period sex is common: in a US national sample of 1,586 women, more than a quarter said they usually had sex during their periods. It isn't birth control, since sperm can live up to five days, and it doesn't protect against infections. Here is what the research found, and why the choice is yours either way, including in perimenopause.

    2 min read

  • PeriodsEvidence check

    Should You Work Out Differently on Your Period? What 78 Studies Found

    Cycle-syncing plans tell you to lift heavy in one phase and rest on your period. A 2020 review of 78 studies found performance dipped only trivially in the days around a period, too little to justify general rules. Symptoms are another story: in a survey of 6,812 women who exercise, frequent cramps, fatigue and mood changes went with more missed workouts. Here is how to find your own pattern.

    2 min read

  • PeriodsExplainer

    Can You Swim on Your Period Without a Tampon?

    A menstrual cup is one option; period swimwear is another if you want nothing inserted. Check product instructions, changing facilities and your flow before heading to the pool.

    3 min read

  • PeriodsEvidence check

    Trouble Sleeping Before Your Period? What Studies Show

    Many women notice worse sleep in the days before and during their period. In a South African diary study, healthy women rated their sleep quality lower over the 3 days before and 4 days of their period, even though the hours slept didn't change. A study of 213 women found three patterns: worse sleep around the period, worse sleep mid-cycle, or no change. Here is what drives it and what to track.

    2 min read

  • PeriodsEvidence check

    Why Endometriosis Takes Years to Diagnose: What Studies Found

    Many women with endometriosis spend years being told their pain is normal. Studies across three decades put the delay at 7 to 12 years, longest for women whose pain began in their teens. In interviews, women described pain treated as ordinary period trouble and tests that couldn't see the disease. Here is what the studies found and how to shorten your own wait.

    2 min read

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