Soreness vs. Pain: How to Tell the Difference (and When to Get It Checked)
Updated: Oct 15
Two days after a heavy lunge workout, a member walked into class like a newborn giraffe and asked me if something was wrong with her legs. Nothing was wrong. She was sore, and sore is part of the deal when you train. Ten minutes later, another athlete mentioned a pinching feeling at the front of his shoulder that had been there for three weeks. He called it "just soreness." That one was a different story.
Most athletes are never taught how to tell these two apart, so they either panic about normal soreness or push through pain that needs attention. Both mistakes cost you training time. The first makes you skip sessions you could have done. The second can turn a small problem into a long layoff.
This article gives you a simple way to read what your body is telling you, what to do with each signal, and when it's time to stop guessing and get it checked by someone qualified. I'm a coach, not a clinician, so treat this as a sorting guide, not a diagnosis.
IN THIS ARTICLE
What Normal Training Soreness Feels Like
The soreness most of us know shows up 24 to 72 hours after a session, especially after new movements, higher volume, or a lot of lowering work like lunges, eccentric pull-ups or step-downs. It's often called delayed onset muscle soreness, or DOMS. Research on DOMS generally finds it's linked to unaccustomed or eccentric-heavy work, and that it fades as your body adapts to that type of training.
Normal soreness tends to share a few traits:
It's dull and achy, spread across a whole muscle rather than one pinpoint spot.
It's on both sides when you trained both sides (both quads, both lats).
It eases as you warm up. The first few air squats feel rough, then the stiffness melts.
It peaks and fades within about two to four days, without getting worse each day.
It follows the work. Heavy hamstring day, sore hamstrings. It makes sense.
If that list describes what you feel, you can usually train. You may want to lighten loads or choose movements that don't hammer the same area, but moving tends to help more than sitting on the couch.
Warning Signs That Point Toward Pain
Pain that deserves attention usually behaves differently. It has a location you can point to with one finger, it shows up during a specific movement, and it doesn't care how warm you are.
Sharp, stabbing or pinching sensations, especially at a joint rather than in the muscle belly.
One side only when both sides did the same work.
It gets worse as you warm up, or it changes how you move (you start shifting to one side, shortening range, or guarding).
It lingers or grows past four or five days instead of fading.
Swelling, bruising, a pop at the moment of injury, or a joint that feels unstable.
Numbness, tingling, or pain that travels down an arm or leg.
Night pain or pain at rest that wakes you up.
Any one of these is a reason to pull that movement out of your training and talk to a professional. Several of them together is a reason to do it this week, not next month. If you ever have chest pain, dizziness, or dark urine with extreme muscle pain and swelling after a brutal session, that is a medical situation. Get seen right away.
The Simple Traffic-Light Check Before Class
When something feels off, I like athletes to run a quick check before they commit to the whiteboard. Warm up with easy movement for five to eight minutes, then rate the feeling on a 0 to 10 scale.
Green (0 to 3 out of 10). General achiness that eases with the warm-up. Train as planned, maybe with slightly lighter loads on the sore area.
Yellow (4 to 5 out of 10). Noticeable discomfort that doesn't change much with the warm-up. Modify. Swap the movement, reduce range or load, and keep the intensity moderate. If it's still yellow in a few days, book an appointment.
Red (6 or higher, or any warning sign above). Stop loading that area. Train what doesn't hurt, and get it assessed by a physical therapist, sports medicine doctor or another qualified clinician.
Coach's cue: If it gets better as you move, it's probably soreness. If it gets worse as you move, stop and listen.
One more checkpoint: pain during a workout that is still there or worse the next morning is a strong sign you did too much of the wrong thing. Soreness the next morning is expected. Joint pain the next morning is information.
Why Athletes Push Through (and Why It Backfires)
I understand the urge to ignore it. When I played volleyball and swam, the culture was to tape it up and keep going. I carried a cranky shoulder for most of a season because I didn't want to be the one sitting out. It never got better on its own. It took a few weeks of modified work and help from a physio to calm it down, and I'm convinced it would have been a few days if I had spoken up at the start.
The pattern I see with athletes I coach now is the same. Small, early problems respond well to small, early changes. A pinch in the front of the shoulder might only need a few weeks of adjusted pressing and some targeted strength work. Ignored, it can turn into months of not being able to go overhead at all.
Speaking up is not weakness. It's how you keep training for years instead of weeks.
What to Do While You Wait to Get Checked
Getting assessed doesn't mean you stop training completely. In most cases you can keep working hard around the problem while you wait for guidance. A sample approach for a sore shoulder might look like this:
Keep your engine going: row, bike, run or ski at an intensity that doesn't bother the shoulder.
Train the lower body normally: squats with a front-rack or goblet position if the back rack hurts, deadlifts, lunges.
Keep core work that doesn't load the area, like dead bugs and side planks.
Remove the movements that provoke it, usually kipping, overhead pressing or heavy hanging, until you get clearance.
Write down what hurts, when, and how much. This makes your appointment far more useful.
Tell your coach before class so they can plan a substitution. A good coach would much rather know upfront than watch you grimace through a workout. Once you have guidance from a clinician, follow their plan first and let your coach build training around it.
Soreness or Pain? The Fast Version
Soreness spreads, pain points. Dull achiness across a whole muscle on both sides is usually soreness. A spot you can point to with one finger deserves attention.
Watch what warming up does. If it eases as you move, you can usually train. If it gets worse, stop that movement.
Use the traffic light. After five to eight minutes of easy movement, 0 to 3 is green, 4 to 5 is yellow and 6 or higher is red.
Check the calendar. Normal soreness fades within two to four days. Anything lasting past four or five days should be looked at by a physio or doctor.
Train around it and speak up. Keep your engine and unaffected areas working, and tell your coach before class.
Train Hard, Listen Harder
Soreness is a normal side effect of doing more than your body is used to. Pain is a signal that something needs to change. Learning the difference, running a quick check before class, and getting help early will keep you on the floor far more often than toughing it out ever will.
If you're managing a nagging issue and want training that works around it while you follow your clinician's advice, individual coaching gives you a personal plan built around your body, your goals and your schedule.
Your turn. Tried this? Tell me how it went in the comments below. I read every one, and your questions help shape what I write next. If it helped, tap the heart so it reaches more athletes.
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Further reading: American College of Sports Medicine (ACSM)
Coach Fritz Bautista · Head Coach, ATHLETESPHERE
CrossFit Level 2 Trainer (CF-L2) ✓ · CrossFit Programming Certificate · MBA Graduate · Digital Marketing Certified · Coaching athletes from all walks of life online
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