Cycle Science

Period acne flares in the week before her period on a hormonal clock, not from bad hygiene. Here’s what’s happening and how to help without commenting on her skin.

Period back pain is the same hormonal event as cramps, felt lower. Here’s why it happens, what actually helps, and when it’s worth a doctor.

Period fatigue is a real, cyclical symptom with a clear mechanism. Here’s why she’s so tired before and during her period, how to help, and when it’s worth a doctor’s look.

Period brain fog is real: why she feels forgetful and unfocused before her period, what the science actually says, and how to lighten her mental load that week.

For many women, headaches cluster right before their period, triggered by a drop in estrogen. Here’s how to spot menstrual migraines and actually help.

Period flu isn’t in her head. Hormone shifts and prostaglandins can leave her achy, feverish and wiped out. Here’s the science, and how to actually help.

Her period’s late and your stomach drops. Here’s what ‘late’ actually means, the common non-pregnancy reasons, and how to be the calm, steady partner through the wait.

PMS vs PMDD isn’t just severity – one is a recognized disorder. Here’s how a partner can tell the difference and actually help.

The week she seems full of energy isn’t a mood – it’s the follicular phase. Here’s what rising estrogen does, and how to work with it.

The whole menstrual cycle explained plainly for partners and fathers – the four phases, the hormones behind them, and exactly what to do in each one. With consent and privacy built in.