Stop and get medical help
If you get chest pain or pressure, feel faint or dizzy, are unusually breathless, or your heart races or beats irregularly during exercise, as our plans advise.
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Call 999 (911 in the US)
For chest pain that comes on suddenly and doesn't go away, feels tight or like squeezing, spreads to your arms, neck, jaw, stomach or back, or comes with sweating, feeling sick, light-headedness or breathlessness; severe difficulty breathing; someone who faints while exercising; palpitations that don't go away, or come with chest pain, shortness of breath or feeling faint; or a headache that starts suddenly and is extremely painful, especially while lifting or straining, or comes with numbness or weakness, difficulty speaking or loss of vision. The NHS says a bleed on the brain may be more likely when lifting something heavy. Don't drive yourself to A&E.
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Suddenly more breathless than usual
Call NHS 111 (in the US, your doctor or an urgent care centre) if you're suddenly more short of breath than usual, or have chest pain with feeling sick or a heartbeat that races, skips or flutters.
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A headache brought on by exercise
Ask for an urgent GP appointment or get help from NHS 111 for a headache that's triggered or made worse by coughing, sneezing, bending down or exercising. In the US, contact your doctor or urgent care.
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Dizziness or a headache on the plate
Stop the plate, hold the rail and step off carefully (our suggestion).
See a GP after any faint, and if you keep feeling light-headed after slowing down gradually, or dizziness keeps coming back.
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During a session
Stop straight away if you feel any pain or become unwell, the NHS says, and contact 111 if your symptoms worry you or don't go away.
A dull ache in your muscles for a day or two after something new is normal. Joint pain that's sharp, gets worse during a set or lingers into the next day means switching to the easier option, and seeing a GP or physiotherapist if it carries on (our plans' rule). Our muscle soreness guide has more.
Source 48
Itching, redness or aches
These were the commonest side effects in trials. Our suggestion: lower the setting or shorten the bouts, and stop using the plate if a symptom doesn't settle after the session.
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A blood clot
Also call 999 for pain and swelling in one leg with breathlessness or chest pain: it can be a blood clot that has reached the lungs.
Same day (urgent GP appointment or NHS 111): throbbing pain in one leg (rarely both), usually the calf or thigh; swelling in one leg (rarely both); red, blue or darkened skin around the painful area, which may be harder to see on brown or black skin; or swollen veins. This can be a deep vein thrombosis (DVT). It is more likely after surgery, a hospital stay, 3 or more days in bed, a journey of over 4 hours, pregnancy or a recent birth, cancer, a previous clot, or oestrogen-containing contraception or HRT.
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Back pain: call 999 or go to A&E
Call 999 or go to A&E: loss of feeling or numbness around the genitals or bottom, new trouble peeing or controlling your bladder or bowels, changes in genital sensation during sex or problems with erections or orgasm, or pain, tingling, weakness or numbness in both legs. These are signs of cauda equina syndrome, which needs treating in hospital urgently. Don't drive yourself.
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Back pain: the same day
Same day (GP or NHS 111): back pain and you feel hot, cold, shivery or generally unwell, or severe pain that starts suddenly or is getting worse quickly.
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Pain spreading down a leg
Call 999 or go to A&E: leg pain with numbness around the genitals or bottom, new trouble starting or controlling peeing, not knowing when you need to poo or losing control of it, sciatica in both legs, or weakness or numbness in both legs that is severe or getting worse. These can be signs of cauda equina syndrome, which needs treating in hospital as soon as possible.
Pain, tingling or numbness spreading below the knee that isn't settling after a few weeks, is getting worse or stops your normal activities: see a GP.
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New back pain if you're at risk of a spinal fracture
Sudden new back pain after a minor fall, lift, cough or sneeze, from 50 or past the menopause, or if you take long-term steroid tablets; or height loss, a curved spine or a change in posture: see a GP. It can be a spinal fracture.
Unexplained back pain with muscle spasms, loss of height, or a curved spine or change in posture: a possible osteoporotic spinal fracture, more likely with older age or long-term steroid tablets.
Your knee
Go to A&E (accident and emergency) if you've injured your knee and it has changed shape, it becomes very swollen very quickly, you felt a pop or snap, you can see bone sticking out, or it's bleeding heavily. Don't drive yourself: ask someone to take you, or call 999 if the pain means you can't move your leg to get there.
Get advice from NHS 111 now: you cannot move the knee or put any weight on it, or it is very painful, badly swollen or has changed shape.
You hurt your knee and cannot take 4 steps, or you are 55 or over and have injured it: get it checked the same day for a broken bone.
Get advice from NHS 111 now: the knee locks, gives way or clicks painfully. Painless clicking is normal.
See a GP: If knee pain doesn't improve within a few weeks.
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Call 999 (911 in the US) after a fall
- After a fall: a possible injury to your head, neck, back or hip, or you cannot get up.
- Call 999 or go to A&E: severe hip pain after a fall or injury, or you cannot stand, walk or put weight on the leg. In an older adult this can be a broken hip; the leg may be at an odd angle or look shorter. Don't drive yourself.
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After a knock to the head
Call 999 if someone has been knocked out and hasn't woken up, can't stay awake, has a fit, has new numbness or weakness, or has problems with their vision, speech, walking or balance. Get help from NHS 111 after a head injury if they're being sick, feel dizzy, or take medicine that thins the blood, as the NHS advises.
A lump in the groin
A lump in the groin, or groin pain with coughing or straining (a possible hernia).
Get help from NHS 111 if you have a hernia (a lump in the groin or tummy) and pain in or around it, a bloated tummy, you feel sick or are being sick, you're vomiting blood or your vomit looks like coffee grounds, you're constipated, you have a high temperature or feel hot, cold or shivery, or you've suddenly become confused.
Call 999 or go to A&E now if you have a femoral hernia (a small lump at the top of the thigh, in the groin) and very bad tummy pain, you feel sick or are being sick, you cannot fart or poo, you have a high temperature or feel hot, cold or shivery, or you've suddenly become confused. It may be strangulated, which is an emergency. Don't drive yourself.
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