Insomnia Before Your Period

Many people sleep worse in the days leading up to their period — falling asleep takes longer, waking up at 3 a.m. becomes routine, and morning grogginess kicks in. There's a hormonal reason for this, and there's plenty you can do about it.

Why it happens

In the luteal phase (after ovulation, before your period), progesterone rises and then falls sharply just before menstruation. Body temperature also rises slightly, which can disrupt sleep. Plus, premenstrual anxiety and tension play a role.

Sleep hygiene basics

Keep your bedroom cool — under 19°C (66°F) if possible. Limit screens 30 minutes before bed. Same sleep and wake times every day. Caffeine cutoff at lunch in the luteal phase, even if you tolerate it fine earlier in the cycle.

Magnesium and other supplements

Magnesium glycinate (200–400mg before bed) has good evidence for sleep and premenstrual relaxation. Some find vitamin B6 helps with PMS-related sleep issues. Talk to a clinician if you're considering supplements regularly.

Movement and stress

Gentle evening yoga, stretching, or a walk after dinner helps. Avoid intense workouts within 2 hours of bed in the luteal phase — they can make sleep harder when your nervous system is already activated.