When Something Hurts

Overview

This page does not diagnose anything and does not give you a rehabilitation programme. Neither is possible from a wiki, and anyone offering you one without seeing you is guessing.

What it does is the part that is genuinely general: telling ordinary soreness from something else, what the first few days look like, the signs that mean urgent care, and when to stop working it out yourself.

Quick Answer

Muscle soreness is dull, diffuse, appears a day or two after unfamiliar training and eases with movement. Pain that is sharp, localised, one-sided, or that appeared suddenly during a lift is different and should not be trained through. NHS advice for a sprain or strain is protection, rest, ice, compression and elevation for the first two to three days, then gentle movement.

Key Points

Soreness is dull, both-sided and fades. Injury is often sharp and one-sided.
Sudden pain during a rep is a stop signal, not something to push through.
First 2 to 3 days: protect, rest, ice, compress, elevate.
Start moving again as soon as pain allows. Prolonged rest is not the answer.
Some signs need A&E the same day. They are listed below.

Telling them apart

Ordinary soreness	Worth attention
Dull, spread across the muscle	Sharp, or pinpointed to one spot
Both sides, roughly equally	One side only
Appears 24 to 48 hours later	Appeared during the set
Eases as you warm up	Worsens as you keep going
Gone in 2 to 3 days	Still there after a week
In the muscle belly	In a joint, or at a tendon

Soreness is covered fully in [muscle soreness explained](/wiki/articles/muscle-soreness-explained). The rest of this page is about the right-hand column.

The first few days

NHS guidance for a sprain or strain is protection, rest, ice, compression and elevation for the first two to three days: protect the area, rest it, apply an ice pack wrapped in a tea towel for up to twenty minutes every two to three hours, wrap it with a compression bandage, and elevate it.

The part people get wrong is what comes next. NHS guidance is that once you can move the injured area without pain stopping you, you should keep moving it to avoid stiffness. Resting a strain for three weeks because it still feels fragile makes it worse, not safer.

For a sprain or strain, NHS guidance also says to avoid strenuous exercise such as running for up to eight weeks because of the risk of re-injury, and that most such injuries feel better within about two weeks.

Go to A&E, or call 999

NHS guidance lists these as needing emergency care:

-You heard a crack at the time of the injury
-The body part is deformed or at an odd angle
-Numbness, tingling or pins and needles
-The skin around the injury is blue or grey, or cold

Those are not a wait-and-see list.

Contact NHS 111

-Pain that is severe or getting worse
-Significant swelling or bruising
-You cannot put weight on it
-Marked stiffness
-Signs of infection, such as a high temperature

See a GP

If it is not improving after treating it yourself, or it is getting worse rather than better.

For persistent aches that build over weeks rather than arriving in one moment, a physiotherapist is usually the right person. In much of the UK you can refer yourself without going through a GP first.

Training around it, not through it

Something hurting in one movement almost never means stopping everything. A sore shoulder does not stop you squatting; a tender knee does not stop you pressing.

Instead of	Do
Stopping training entirely	Train everything that does not hurt
Pushing through the painful lift	Swap it for one that does not provoke it
Testing it every session	Leave it alone and reassess weekly
Loading it the same way	Reduce range, load or both, and build back

Keeping the rest of your training going protects the habit, the other muscle groups, and your mood, all of which make the return easier.

The pattern behind a lot of gym injuries

Not one bad rep, usually. A load that outran technique over several weeks, a jump in volume with no build-up, or a movement pattern nobody ever coached.

The prevention is unglamorous and it is all covered elsewhere: [progress the load only as fast as technique holds](/wiki/articles/ego-lifting-and-technique), add volume gradually, [warm up properly](/wiki/articles/warm-up-routine), and [deload before you need to](/wiki/articles/deload-weeks).

Common Mistakes

Mistake	Why it causes problems	Better approach
Training through sharp pain	Turns a small problem into a long one	Stop that movement
Complete rest for weeks	Causes stiffness and deconditioning	Move as soon as pain allows
Testing it every session	Never lets it settle	Reassess weekly
Self-diagnosing from a video	Confident, frequently wrong	See a physiotherapist
Stopping all training	Costs the habit and everything else	Train around it

Frequently Asked Questions

Is it soreness or an injury?

Soreness is dull, on both sides, arrives a day or two later and eases with movement. Sharp, one-sided pain, or pain that appeared during a lift, is something else.

Should I rest completely?

No. NHS guidance is to rest and protect it for the first two to three days, then start moving it again as soon as you can do so without pain stopping you.

When should I see someone?

See a GP if it is not improving or is getting worse. Some signs need urgent care the same day: a crack at the time, deformity, numbness or tingling, or skin that is blue, grey or cold.

Can I still train?

Almost always, just not that movement. Train everything that does not provoke it.