Fascia guide
Cupping uses suction cups to pull up your skin and the soft tissue just beneath it. The round marks it leaves are bruises: blood from tiny vessels the suction has broken, not toxins drawn out of your body.
In small trials, cupping eased neck and back pain more than doing nothing, for a few weeks. Against fake cupping it made little or no difference, and no lasting benefit has been shown.
This guide covers what cupping does to tissue, what the trials found, what the marks and their colours mean, who should avoid it, how to use cups more safely if you choose to, and the exercise that helps sore necks and backs more reliably.
Across 18 trials of 1,172 people with long-term pain, cupping eased pain far more than no treatment in the short term, and reviews of neck and back pain agree. The trials were small, and people knew which treatment they'd had.
Against sham (fake) cupping, the difference wasn't significant. In a trial of 90 people with long-term low back pain, real or sham cupping once a week for 8 weeks gave pain scores within 1 point of each other on a 10-point scale.
Two years after a course for neck pain, people's pain was no lower than before treatment. In back pain trials, the benefit had gone a month after treatment ended.
Suction breaks tiny blood vessels and blood leaks into the skin, which your body clears like any bruise. The UK's advertising regulator found no robust evidence that cupping removes toxins.
Fire cupping can burn the skin, and wet cupping and shared equipment can spread infection. Skip cupping if you have a bleeding disorder or broken or infected skin, and ask your doctor first if you take blood thinners.
Exercise reduced long-term low back pain in a review of 249 trials, and strengthening reduced long-term neck pain. Even 2 minutes a day of band exercises helped office workers with sore necks and shoulders. If you like cupping, use it alongside exercise, not instead.
Cups of glass, plastic, bamboo or silicone are held on the skin by suction. In dry cupping they stay in place for several minutes; in moving or massage cupping they slide over oiled skin. Wet cupping (hijama) pierces or scratches the skin first, so blood flows into the cup. The suction comes from a flame that heats the air inside the cup (fire cupping) or from a pump.
Wet cupping is also a religious and cultural practice for many people. This guide covers its evidence for pain and its safety, not its religious value.
The cup stretches the skin and the tissue just beneath it and widens the small blood vessels until some break. The leaked blood is the mark. A computer model found the pulling forces stay mostly in the tissue inside the cup, and that stronger suction means more force and worse bruising.
After one 8-minute cup, 32 young adults with neck pain had more oxygen-rich blood in the skin and less pain than with a sham cup, but both were back to normal a day later. In 12 people, the tissue under the cup showed signs of working without enough oxygen (its lactate rose) from about 160 minutes after cupping until measuring stopped at 280 minutes, and sensitivity to pressure fell slightly straight afterwards, in some spots.
No study has shown cupping reshaping or releasing fascia. In small trials in healthy volunteers, cupping added no flexibility beyond sham; one review rates the flexibility evidence as moderate. That fits the research on rollers and massage: tools change how tissue feels for a while, and loading over weeks changes tissue.
Reviews of mostly small trials find cupping eases long-term neck, back and other muscle and joint pain more than no treatment or a waiting list. On paper the effect is large: in 18 trials of 1,172 people, pain fell a lot in the short term. Neck pain reviews of 18 trials and of 9 trials (401 people) agree, but a 2025 review across muscle and joint pain found pain eased while disability and mental health didn't improve.
People knew which treatment they had, most trials were at high risk of bias, and a map of 14 reviews found no high-quality evidence for any pain condition. Cochrane, which publishes the most rigorous reviews, has so far only published its plan (protocol) for a review of cupping for long-term low back pain.
When the comparison is a sham (cups with little or no suction), the benefit mostly disappears. Pooled across trials it wasn't significant, and a 2026 review of 5 sham-controlled trials (281 people) found the effect too uncertain to call, at very low certainty.
In 90 people with long-term low back pain, 8 weekly sessions changed pain by less than 1 point out of 10 compared with sham. In 141 people with fibromyalgia, cupping beat usual care by about 12 points out of 100 but sham by only 3, and the authors concluded it can't be recommended. In 62 women with knee arthritis, 12 sessions were no better than sham. In back pain, low-pressure cupping did about as well as the real thing.
In four trials from one research group, each with 50 people, cupping beat a waiting list or usual care for long-term neck pain: by about 22 points out of 100 after 5 sessions over 2 weeks, by about 18 points 3 days after a single session, and by about 11 points after 5 cupping massages. With a pulsating cupping device, diary pain fell from about 4 to under 3 out of 10, while it stayed at about 4 with usual care. In these trials, the smallest change people noticed was about 8 points out of 100.
Cupping massage given at home by a partner twice a week for 12 weeks was no better than relaxation exercises (61 people). Two years on, the 82 of 133 treated people who replied had no less pain than before treatment, though they said the effect had lasted about 9 months on average.
In 11 trials of 921 people, cupping eased pain by the end of treatment, but not 1 month or 3 to 6 months later, and dry cupping on its own wasn't clearly better. Against sham, 8 weekly sessions made no worthwhile difference. Wet cupping beat no treatment in 80 people for at least 2 weeks after treatment, with no sham group, and in 110 people both pulsating and low-pressure cupping beat paracetamol alone.
Added to stretching in 71 people with heel pain, cupping on the calf eased pain about 2 points out of 10 more at the session. The 2023 US physiotherapy guideline for heel pain says that difference had gone 2 days later, though the trial itself reports a larger fall in morning pain at 2 days. In 29 people, cupping did as well as electrical stimulation over 4 weeks. There are no sham-controlled trials. Stretching the sole and calf has stronger support: the guideline's top grade, for short- and long-term pain.
A review of 11 trials in 498 athletes, mostly against no treatment and none reporting safety, couldn't recommend cupping either way. In 81 recreational runners, 5 minutes of cupping on the thighs after a run did no better than a sham treatment for soreness, tiredness, recovery or jumping over 3 days.
Suction breaks tiny blood vessels, and blood leaks into the skin. Your body clears it like any bruise, which is why the marks turn green and yellow as they fade. Cleveland Clinic, a US hospital, says they should fade in a week or two.
One small lab study and a computer model suggest the colour follows suction strength and time, not toxins. A darker mark means stronger suction or a longer time, not "stagnation" or poisons leaving your body.
Medicines that slow clotting, such as warfarin, apixaban, aspirin and clopidogrel, make bruises come up more easily, look worse and take longer to fade.
Cupping marks can look like injuries. Tell any doctor or nurse who examines you, so the marks aren't mistaken for signs of physical abuse.
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The cautions with the clearest reasons:
US hospital guidance (it doesn't give evidence) also lists a past stroke, anaemia, a pacemaker or defibrillator, heart disease, epilepsy, undiagnosed lumps, cancer, organ failure, nerve damage, poor circulation in the legs, having a period, and giving blood in the last 2 months. Ask a doctor first if any of these apply to you.
A neck artery tore after high-suction electrical cupping, and three people had bleeding around the brain after cups at the top of the neck were pulled off suddenly. A review found 14 such nerve and brain complications in 12 reports. Keep cups off the front and sides of the neck and the base of the skull.
Marks, soreness, tiredness, a headache, feeling sick and itching. Some people faint, mostly with wet cupping. Less often: lasting skin discolouration, scars, burns and infections.
Fire cupping, which heats the cup with a flame (often alcohol on cotton wool), has caused burns. Case reports describe herpes, mycobacterial and staphylococcal infections after cupping, and a death from a deep tissue infection (necrotising fasciitis) after wet cupping in a man who declined surgery. About 30 wet cupping sessions in 2 months from an unqualified practitioner caused anaemia that needed a blood transfusion.
Shared cups that aren't properly cleaned can spread hepatitis B and C. Reused cups need high-level disinfection, and equipment for wet cupping needs sterilising.
The Chartered Society of Physiotherapy (CSP), the UK physiotherapists' professional body, says cupping lacks an evidence base and is no longer within physiotherapy's professional scope, so its insurance scheme doesn't cover it. One NHS trust's acupuncture guidance excludes cupping from practice.
Choose someone who asks about your health first and uses single-use or properly disinfected cups; wet cupping needs sterile, single-use blades. Prefer pump or silicone cups to fire cupping, which carries the burn risk.
A home trial tested cupping massage given by a partner twice a week. Our editorial starting point:
Against no treatment, strengthening, neck control exercises, and yoga, Pilates or tai chi all reduced long-term neck pain in 40 trials, with no single type best (very low certainty). In 48 women with painful upper shoulder muscles, 10 weeks of specific strength training cut their worst pain by 35 points out of 100. In 198 office workers, 2 minutes a day of band training, 5 days a week for 10 weeks, eased neck and shoulder pain by 1.4 points out of 10 more than health advice. Even standard massage made little or no difference against a placebo in a Cochrane review.
Our editorial starting point: the neck and shoulder strength routine below, 2 to 3 days a week, or the 2-minute band exercise on 5 days a week, as in the trial.
Exercise reduced long-term low back pain by about 15 points out of 100 against no treatment, usual care or a placebo in 249 trials (moderate certainty). The National Institute for Health and Care Excellence (NICE) recommends exercise, and hands-on treatments such as massage only as part of a package that includes exercise. It doesn't mention cupping.
From a trial of 198 office workers who did 2 minutes of band training a day, 5 days a week, for 10 weeks (Andersen 2011). The trial used elastic tubing; this lateral raise is our version, and the repetitions within the 2 minutes are our editorial starting point. Stop if it brings on dizziness, or tingling or numbness into an arm.
Loading the 3D figure…
The movement on the figure: Band lateral raise
Start with the deep neck holds and band work, 2 to 3 days a week, and stop for dizziness, or tingling or numbness into an arm.
3D demoChin tuckBeginner · No equipment
3D demoLying chin tuckBeginner · No equipment
3D demoChin tuck with head liftIntermediate · No equipment
3D demoIsometric neck holds (four-way)Beginner · No equipment
3D demoBand lateral raiseBeginner · A band
3D demoBand rowBeginner · A band + An anchor point
3D demoProne Y-T-W raisesBeginner · No equipment
3D demoWall angelBeginner · A wall
3D demoThoracic rotationBeginner · No equipment
3D demoUpper trap releaseBeginner · No equipmentMove gently first, then add the strength moves 2 to 3 days a week.
For a stiff neck, start with the neck and shoulder strength routine 2 to 3 days a week. The back routines suit a sore lower back.
Deep neck holds and shoulder-blade strength in under 20 minutes: one of the best-supported kinds of exercise for a stiff, sore neck.
18 minBeginner11 movesA band, An anchor pointEight gentle neck and shoulder stretches for desk stiffness, done standing or seated in ten minutes.
10 minBeginner8 movesA wallA 12-minute routine for a stiff upper back and rounded shoulders: chin tucks, wall angels, Y-T-W raises and open books.
12 minBeginner8 movesA foam roller, A wallGentle rolling for the upper back and lats, rotation and segmental spine work, then two easy strength moves. Exercise is what back-pain guidelines recommend.
15 minBeginner11 movesA foam rollerA gentle 15-minute Pilates-based routine for ongoing low back pain, built from neutral-spine moves with options for backs that dislike bending or arching.
15 minBeginner10 movesNo equipmentThe McGill big three for the core: curl-ups, side planks and bird dogs, each held for 10 seconds at a time in falling sets of 5, 3 and 1 reps.
12 minBeginner3 movesNo equipmentGet help straight away if:
Hold it under cool running water for 20 minutes, as soon as you can. Don't burst blisters, and don't put creams, oils or butter on it.
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Our suggestion, if you have:
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The marks are blood leaking from broken vessels, cleared like any bruise. The Advertising Standards Authority (ASA) found no robust evidence that wet cupping removes toxins or harmful substances, prevents illness or boosts immunity, and ruled the advert misleading.
One small lab study and a computer model suggest the colour follows suction strength and time, not toxins or stagnation. A darker mark tells you about the cup, not about you.
In small trials in healthy volunteers, cupping added no flexibility beyond sham; one review rates the evidence as moderate. No study has shown fascia changing shape, and against sham the pain benefit mostly disappears.
In runners it did no better than a sham treatment, and athlete trials don't support a recommendation. Massage has better evidence for soreness after exercise: see the muscle soreness guide.
We found no trial of cupping for cellulite. Bruising the skin isn't the same as changing it: see the fascia blasting verdict.
In small trials, it eased neck and back pain more than doing nothing, for a few weeks. Against fake cupping the difference was small or absent, and no lasting benefit has been shown. Exercise has better evidence for the same kinds of pain.
They're bruises: the suction breaks tiny blood vessels and blood leaks into the skin. A darker mark means stronger suction or a longer time, not more toxins or stagnation.
Usually from a few days to about 2 weeks. Blood thinners can make the marks worse and slower to fade. If they haven't faded after 2 to 3 weeks, or bruises appear without cupping, see a GP.
No. The marks are blood under the skin, which your body clears like any bruise. The UK's advertising regulator ruled claims that wet cupping removes toxins misleading.
Most side effects are mild: the marks, soreness, tiredness, a headache or itching. Fire cupping can burn, wet cupping can cause infections, and rare serious problems have followed cups on the head or neck.
Skip it if you have a bleeding disorder or broken, fragile or infected skin, keep cups away from a known or suspected blood clot, and ask your doctor first if you take blood thinners. In pregnancy, keep cups off the bump and ask your midwife first. US hospitals list more conditions, such as epilepsy or a pacemaker, without giving evidence for them.
Not that research has shown. In small trials in healthy volunteers it added no flexibility beyond fake cupping, and the changes under the cup last minutes to hours. For knots, see the trigger points guide.
In a trial of 90 people, 8 weekly sessions made no worthwhile difference to long-term low back pain compared with fake cupping. Exercise has much better evidence, and NICE puts it first.
Against no treatment, a course of about 5 sessions eased neck pain for a few weeks. Two years later, pain was no lower than before treatment. Neck strengthening has better evidence.
If you choose to, use silicone or pump cups with light suction, keep them off the front and sides of your neck and the base of your skull, and break the seal before you lift a cup off. Never do fire or wet cupping at home.
One trial without a fake treatment found less back pain for a few weeks. Because it breaks the skin, it carries infection risks, so it needs sterile, single-use equipment and a trained practitioner.
Both leave marks by breaking tiny blood vessels, and both have small, short-term trials for neck and back pain. Neither has shown a lasting benefit, and neither has been shown to change fascia.
Movement education, not medical advice. Stop for sharp or increasing pain, numbness or tingling, and get individual advice if you are pregnant, after an injury or surgery, or managing a health condition. Health disclaimer.
