Also called: PMS; premenstrual syndrome; PMDD

Exercise strongly helps Strength Stretch Massage

The predictable week of low mood, irritability, bloating, sore breasts and aching before a period. It is not an over-sensitivity to hormones but an over-sensitivity to normal hormonal change, and exercise happens to act on several of the pathways at once.

How common: Up to 75% of menstruating women report some premenstrual symptoms; PMDD in 3-8%

What it is

Premenstrual syndrome is a cluster of physical and emotional symptoms in the luteal phase - the week or two before a period - that settle once bleeding starts. The hormone levels in women with severe PMS are typically normal; what differs is the sensitivity of the brain and body to the normal fall in oestrogen and progesterone.

PMDD, premenstrual dysphoric disorder, is the severe end: mood symptoms significant enough to damage work and relationships, affecting a small percentage of women. It is a recognised condition with real treatments, not a matter of degree in someone else's judgement, and it deserves proper assessment rather than management.

What it feels like

  • Low mood, irritability or tearfulness arriving on a predictable schedule
  • Bloating, fluid retention and clothes fitting differently
  • Breast tenderness and swelling
  • Headaches, aching joints and a lower tolerance for pain generally
  • Cravings, poor sleep and fatigue, all lifting within a day or two of bleeding starting

What causes it

Most people have more than one of these at once, and they feed each other. Read the list looking for the two or three that sound like your week rather than for the one true answer — the ones that describe you are the ones worth acting on.

Sensitivity to normal hormonal change
The falling oestrogen and progesterone of the luteal phase are normal. What varies between women is how strongly the brain responds to that change, particularly through the serotonin system - which is why serotonergic treatments work in severe cases.
Progesterone metabolites acting on the brain
Allopregnanolone, a breakdown product of progesterone, acts on the same brain receptors as sedatives and alcohol. Some women respond to it paradoxically, with anxiety and irritability rather than calm.
Fluid shifts
Hormonal changes alter sodium and water handling, producing genuine bloating, breast swelling and weight fluctuation across the cycle. It is real fluid, not imagination.
Lower pain thresholds in the luteal phase
Pain sensitivity measurably increases premenstrually, which is why existing aches, headaches and joint pain all get worse in that week without anything having changed mechanically.
Poor sleep in the premenstrual week
Sleep quality falls in the luteal phase for many women, and short sleep amplifies mood symptoms, pain sensitivity and appetite - three of the main complaints at once.
Inactivity
Regular exercise reduces PMS symptom severity in trials, probably through endorphins, better sleep, reduced fluid retention and improved mood regulation. Not exercising removes several protections simultaneously.
Stress
Background stress amplifies every luteal symptom, and the luteal phase reduces stress tolerance. A hard month and a bad premenstrual week reinforce each other.
Caffeine, alcohol and salt
All three worsen specific symptoms - caffeine the anxiety and breast tenderness, alcohol the mood and sleep, salt the fluid retention. All are commonly increased in exactly that week.
Underlying mood conditions
Existing depression or anxiety typically worsens premenstrually rather than being caused by it. Distinguishing premenstrual exacerbation from PMDD matters because the treatments differ.

Who tends to get it

  • Women of reproductive age, with symptoms often peaking in the thirties and forties
  • Anyone with an existing mood or anxiety condition, which typically worsens premenstrually
  • Women under high stress or sleeping poorly
  • Anyone with a family history of severe PMS or PMDD
  • Women who are inactive, which removes one of the few reliable protections

What makes it worse, and what settles it

Makes it worse

  • Alcohol and caffeine in the premenstrual week
  • Poor sleep, which amplifies every symptom
  • Stopping exercise because you feel awful, which removes the thing most likely to help
  • High salt intake, which worsens the fluid retention
  • Dismissing severe symptoms as normal, which is how PMDD goes untreated for years

Settles it

  • Regular aerobic exercise across the whole cycle, which reduces severity over two to three months
  • Strength training, which has independent evidence for mood and sleep
  • Gentle stretching and massage in the symptomatic week for the physical aching
  • Tracking the cycle so the pattern is predictable rather than baffling
  • Protecting sleep in the luteal week specifically

What actually helps

The short version: Cyclical hormonal sensitivity affecting mood, fluid balance and pain thresholds; exercise modulates several of the pathways at once

Strength work: Full Body; regular moderate resistance training across the whole cycle rather than only during symptoms

Stretching: Hips: Adductors; Back: Lower Back; Spine; Full Body

Massage: Back: QL; Neck & Shoulders; Professional Massage

Also worth doing: Consistent aerobic exercise; sleep regularity; reducing alcohol in the luteal phase

What the evidence says: Regular aerobic and resistance exercise reduces PMS symptom severity in RCTs. The benefit comes from training all month, not from exercising during the symptomatic week.

The names above are the Targets qFIT tracks — the Muscle Guide explains what each one does, and Quick Add switches on the Exercises you already have.

The qFIT routine for this

Ready-made routineMenopause & Cycle Support

qFIT already has this one built. It runs massage first, then stretching, then strength — the order that works on a body that is already sore — and every activity in it carries the reason it is there.

The button below opens your Checklist with this routine already selected, so instead of your whole list you land on just its Categories, Targets and Exercises, each with its checkbox, ready to tick as you work through them.

Have more than one problem? Tick yours under My Problems on My Profile and your Checklist's Routine list gains Recommended for my problems — every routine for the problems you picked, merged into one. Your picks stay private; that filter is the only thing they feed.

Get it checked if…

Symptoms severe enough to disrupt work or relationships suggest PMDD and deserve medical treatment, not just exercise

And whatever the body part: chest pain or unusual breathlessness on exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or one calf that is swollen, warm and painful. Any of those, stop and get assessed.

How it usually goes

Exercise reduces symptom severity measurably, but the effect builds across two to three cycles rather than within one - so judge it after three months, not after one bad week. Tracking symptoms against the cycle is worth doing for its own sake: knowing it is coming changes how it lands. Severe mood symptoms that damage work or relationships are PMDD rather than PMS and there are effective medical treatments, so that is worth pursuing rather than enduring.

Prevalence basis: Gynecology and psychiatry epidemiology

Others the same routine covers

These share the Menopause & Cycle Support routine, so the work is the same. If one of them also sounds like you, that is a reason to expect more from it, not less.

This is general information, not a diagnosis, and it cannot examine you. If it matches you, use it to ask better questions of a clinician rather than to replace one.