How to tell workout soreness from injury
Normal soreness after exercise is a dull, spread-out ache in the muscles you worked, starting a day later and fading over two or three days. An injury is more often sharp, in one spot or a joint, starts during the movement, or comes with swelling, bruising, a pop, weakness or a limp. Rest and ease back from soreness; stop and get checked for anything that looks like injury.
About 10 minutes to learnSafety critical: tightly scoped, know when to call a professional
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How to do it
- Notice when the pain started: during the lift, or the next day.
- Notice what kind it is: a dull ache across the muscle, or sharp pain in one spot or a joint.
- Look for swelling, bruising, a visible change in shape, weakness or a limp.
- Treat plain soreness with easy movement such as walking, and let it fade over two or three days.
- Skip hard training on a body part that is still very sore.
- Stop the exercise at once if you feel a pop, a sharp pain or a joint giving way.
- Call your local emergency number, 911 in the US, for chest pain, pressure or fainting during exercise.
Stop and call a professional if
- You feel chest pain, pressure, fainting or severe breathlessness during or after exercise: call your local emergency number, 911 in the US.
- Your urine turns dark brown or cola colored with severe muscle pain and swelling after a hard session: go to an emergency room now or call your local emergency number, 911 in the US.
- Pain is sharp, in a joint or bone, comes with swelling, a pop or weakness, or has not eased after a week: see a clinician.
Common mistakes
- Training through sharp pain because you think soreness is a sign of progress.
- Mistaking chest pain for a pulled muscle.
- Ignoring very dark urine and severe muscle pain after an extreme session.
Quick self-check
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Teach this to someone
A one-page sheet for showing a friend, a roommate or a kid: what to say, what to show, and one question to check it landed.
Teach: How to tell workout soreness from injury
What to say
Normal soreness after exercise is a dull, spread-out ache in the muscles you worked, starting a day later and fading over two or three days. An injury is more often sharp, in one spot or a joint, starts during the movement, or comes with swelling, bruising, a pop, weakness or a limp. Rest and ease back from soreness; stop and get checked for anything that looks like injury.
What to show, in order
- Notice when the pain started: during the lift, or the next day.
- Notice what kind it is: a dull ache across the muscle, or sharp pain in one spot or a joint.
- Look for swelling, bruising, a visible change in shape, weakness or a limp.
- Treat plain soreness with easy movement such as walking, and let it fade over two or three days.
- Skip hard training on a body part that is still very sore.
- Stop the exercise at once if you feel a pop, a sharp pain or a joint giving way.
- Call your local emergency number, 911 in the US, for chest pain, pressure or fainting during exercise.
When to stop and call a professional
- You feel chest pain, pressure, fainting or severe breathlessness during or after exercise: call your local emergency number, 911 in the US.
- Your urine turns dark brown or cola colored with severe muscle pain and swelling after a hard session: go to an emergency room now or call your local emergency number, 911 in the US.
- Pain is sharp, in a joint or bone, comes with swelling, a pop or weakness, or has not eased after a week: see a clinician.
The check question
Ask: Which pain is typical workout soreness?
Related skills
- How to warm up before exercise
- Signs of a heart attack
- How to treat a sprained ankle
- Every skill in Fitness Form Basics
Sources
- National physical activity guidelines for adults, Second edition. Checked September 28, 2026.
Last reviewed . First published .