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. The American Heart Association says these need immediate medical evaluation.
Source 22
Call 999 (911 in the US)
For chest pain that doesn't go away, feels tight, heavy or like squeezing, or 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. Don't drive yourself to A&E.
Sources 24, 25, 26, 27, 28, 29, 30
Check before you start
If you haven't exercised for some time or have a medical condition, speak to your GP first, as the NHS advises. Get advice before explosive work if your blood pressure is uncontrolled, or you have heart disease or chest pain when you're active, a pacemaker or defibrillator, diabetic eye disease, glaucoma, a hernia, recent eye or tummy surgery, or you're pregnant, as our breathing guide lists.
Source 31
After a faint, or dizziness that keeps coming back
See a GP after any faint, and for dizziness that won't go away or keeps coming back.
Sources 27, 32
Your wrist
Contact NHS 111 for severe wrist pain, a snap, grinding or popping noise at the time of an injury, a wrist you can't move or hold things with, or one that has changed shape or colour. After a fall onto your hand, pain at the base of the thumb on the back of the wrist needs checking the same day, even if it moves well, as our wrist pain from push-ups guide says. See a GP if wrist pain hasn't improved after 2 weeks, keeps coming back, or comes with tingling or loss of feeling.
Source 33
Your elbow and arm
Go to an urgent treatment centre or A&E for severe arm pain that makes it hard to move your arm, a snapping noise or a change of shape after an injury, or an arm that tingles or feels numb. A pop at the back of the elbow during a push, then pain, swelling or weakness straightening your arm, needs the same, as our archer push-up guide says. Call 999 if arm pain comes on suddenly with pressure, heaviness or squeezing across your chest.
Source 34
Your shoulder
Ask for an urgent GP appointment or get help from NHS 111 for sudden or very bad shoulder pain, an arm you can't move, a shoulder that has changed shape or is badly swollen, pins and needles that don't go away, or pain that started after a fall or injury. See a GP if it's getting worse or hasn't improved after 2 weeks.
Source 35
A missed catch
If you land on your face or head and feel unwell, drowsy or confused afterwards, get help: call 999 if someone has fallen and may have injured their head.
Source 36
Muscle pain far worse than the session explains
After a big or unusual session, such as a push-up challenge, severe muscle pain, swelling or weakness with dark urine needs same-day help: NHS 111, or A&E if you feel very unwell. Severe exertion, including calisthenics, is among the causes of muscle breakdown (rhabdomyolysis).
Source 37