Preparing for your period comes down to three things: knowing when it’s coming, having the right supplies ready, and giving your body what it needs in the days before bleeding starts. Most of what makes a period miserable, from cramps to mood dips to breakouts, can be reduced with simple preparation in the week leading up to it.
Track Your Cycle So You’re Never Caught Off Guard
The simplest way to prepare is knowing when your period will arrive. A basic cycle-tracking app works for most people, but if your cycle is irregular or you want more precision, tracking basal body temperature (BBT) adds a layer of accuracy. Your BBT hits its lowest point about one day before ovulation, then rises noticeably about two days later as progesterone kicks in. That temperature shift confirms you’ve ovulated, and your period will typically arrive 10 to 16 days after that.
Resting heart rate follows a similar pattern, rising during the luteal phase (the back half of your cycle) and dropping as your period approaches. If you wear a fitness tracker, you may notice this shift before any other symptoms appear. Even without gadgets, paying attention to recurring signs like breast tenderness, bloating, or mood changes in the same window each month helps you narrow down your timeline.
Stock Up on the Right Products
Having products ready before day one saves you from frantic scrambling. It also helps to know what you’re working with: a typical period involves about 60 milliliters of blood loss total, spread across several days. Heavy menstrual bleeding is defined as regularly losing more than 80 milliliters per cycle.
Not all menstrual products hold the same amount. In a 2024 study measuring red blood cell capacity, menstrual discs held the most at an average of 61 milliliters, making them practical for heavier days or overnight use. Tampons, pads (heavy or ultra absorbency), and menstrual cups held similar amounts, roughly 20 to 50 milliliters depending on the product. Period underwear held the least at around 2 milliliters on average, making it better suited as backup protection than as a standalone option on heavy days.
Keep a small kit in your bag starting a few days before your expected start date: a product or two, a spare pair of underwear, and a pain reliever if cramps are part of your pattern.
Start Pain Relief Before the Pain Starts
If you regularly get menstrual cramps, timing your pain relief makes a real difference. The Mayo Clinic recommends starting ibuprofen or naproxen sodium the day before you expect your period to begin, taken at regular doses. This lets the anti-inflammatory effect build up before cramping kicks in, rather than chasing pain that’s already established. Waiting until cramps are severe means you’re playing catch-up, and that’s a harder game to win.
Eat to Support Your Mood and Energy
The week before your period, shifts in estrogen and progesterone affect neurotransmitters in your brain, particularly serotonin. Declining estrogen can lower serotonin availability, which helps explain the irritability, sadness, and cravings that often show up in the days before bleeding starts. Those carb cravings aren’t random. Carbohydrates increase the availability of tryptophan, the amino acid your brain uses to make serotonin. Complex carbohydrate-enriched drinks and tryptophan supplements have both been shown to significantly reduce PMS symptom severity compared to placebo.
In practical terms, this means leaning into whole grains, oats, sweet potatoes, and bananas in the days before your period rather than fighting every craving. Pairing those carbs with protein-rich foods that contain tryptophan (turkey, eggs, tofu, pumpkin seeds) gives your brain more raw material to work with.
Magnesium is another nutrient worth paying attention to. A clinical trial found that 250 milligrams of magnesium daily reduced PMS severity, and the effect was even stronger when combined with 40 milligrams of vitamin B6. Magnesium-rich foods include dark chocolate, spinach, almonds, and black beans, so adding these to your meals in the luteal phase is a low-effort, high-reward move.
Adjust Your Workouts, Don’t Skip Them
Exercise in the days before your period still improves mood and cognitive function. A study measuring cortisol and brain performance found that reaction times improved after moderate aerobic exercise in both the follicular and luteal phases. Your body does respond differently to exercise depending on where you are in your cycle, though. Cortisol levels and fat burning after exercise are both higher in the follicular phase (the first half of your cycle). During the luteal phase, progesterone appears to blunt the cortisol response to exercise.
What this means practically: you don’t need to push for personal records in the days before your period. Moderate-intensity movement like walking, cycling, swimming, or yoga still delivers the mood and energy benefits without overtaxing a body that’s already running warmer and working harder behind the scenes. Save the intense sessions for the first half of your cycle when your body is more primed for them.
Prepare for Better Sleep
One of the most overlooked parts of period prep is sleep. Rising progesterone in the luteal phase increases your core body temperature by 0.3 to 0.6 degrees Celsius. That doesn’t sound like much, but it’s enough to fragment your sleep, meaning more nighttime wake-ups and less restful rest overall. This is why you might feel exhausted in the days before your period even if you’re spending plenty of time in bed.
To counteract this, keep your bedroom cooler than usual in the pre-menstrual window. A fan, lighter bedding, or dropping the thermostat by a couple of degrees can offset that internal temperature rise. Avoiding heavy meals and screens close to bedtime also helps, but the temperature piece is the most directly connected to the hormonal shift happening in your body.
Get Ahead of Hormonal Breakouts
Acne that flares up before your period is driven by increased oil production during the luteal phase. If this is a recurring pattern for you, adjusting your skincare routine about a week before your expected period can make a noticeable difference. The goal is controlling oil and keeping pores clear before they have a chance to clog.
Niacinamide (a form of vitamin B3) helps regulate oil production and is gentle enough for daily use. Salicylic acid unclogs pores by dissolving the buildup inside them. Azelaic acid tackles acne-causing bacteria while reducing redness. Zinc, applied topically, reduces swelling and controls excess oil. You don’t need all of these at once. Adding one or two to your routine in the back half of your cycle, particularly in the five to seven days before your period, targets breakouts at the stage where prevention is still possible.
Know the Difference Between PMS and Something More Severe
Most people experience some combination of bloating, mood changes, fatigue, and cravings before their period. That’s standard PMS. But a condition called PMDD (premenstrual dysphoric disorder) is significantly more intense and affects daily functioning. The diagnostic criteria require at least five symptoms in the final week before your period, with at least one being a marked mood symptom: severe mood swings, intense irritability, depressed mood with feelings of hopelessness, or significant anxiety and tension.
The key distinction is the word “marked.” PMS makes you uncomfortable. PMDD interferes with your ability to work, maintain relationships, or function in your daily life, and it follows this pattern in the majority of your cycles. Additional symptoms include difficulty concentrating, extreme fatigue, major appetite changes, insomnia or oversleeping, and feeling overwhelmed or out of control. If your pre-period experience goes beyond discomfort into something that disrupts your life month after month, that’s worth bringing up with a healthcare provider, because PMDD has specific treatments that general PMS advice won’t cover.