- A niggle is a mild, familiar ache. Sudden pain, swelling or loss of function is an injury.
- Pain up to about 3 or 4 out of 10 that settles within 24 hours is usually acceptable.
- Change load, range or exercise rather than stopping all training.
- Not improving after two weeks, or getting worse: get it assessed.
Niggle or injury?
Almost everyone who trains regularly has a niggle at some point: a knee that grumbles on deep squats, a shoulder that is not quite happy overhead, an Achilles that is stiff first thing. These usually build gradually, sit at a low level, and do not stop you moving normally.
An injury tends to look different. It often has a clear moment when it happened, such as a pop in the calf or a twist of the ankle, and comes with swelling, bruising, a loss of strength or an inability to bear weight or move normally. That needs a proper assessment before you train it, not a workaround.
Pain is not a precise measure of damage. Sore does not always mean harmed, and your nervous system can turn the volume up on an area that is sensitive without anything being broken. Our guide to understanding pain explains why. That is good news, because it means many niggles respond well to sensible loading rather than rest.
Keep a short note of what aggravates it and what eases it. Patterns such as 'worse after running downhill' or 'fine once warm but stiff the next morning' are useful clues, both for you and for anyone who assesses it later.
The 0 to 10 rule
Physios often use a simple pain-monitoring approach for niggles and tendon problems. Rate your pain from 0 (none) to 10 (the worst imaginable).
- During exercise: pain up to about 3 or 4 out of 10 is generally acceptable.
- After exercise: it should settle back to your usual level within about 24 hours.
- Next morning: it should not be worse than the morning before.
- Over the week: the trend should be steady or improving.
If you break those rules, you did a bit too much. Reduce the load or change the exercise next time. If you stay within them, you can carry on and gradually build back up. Our guide to whether to rest or move explains the thinking behind this in more detail.
Modify, do not just stop
There are almost always ways to keep training an area without aggravating it. The trick is to change one variable at a time until you find a version that stays within the rules above.
- Load: drop the weight by 20 to 40% and do more controlled reps.
- Range: squat to a box, press from pins, or shorten the stride on lunges.
- Tempo: slow lowering phases are often well tolerated and useful for tendons.
- Exercise: swap an overhead press for a landmine press, a back squat for a sled push, running for the bike.
- Grip or stance: a neutral grip often suits sore elbows and shoulders; a wider or narrower stance can change how a knee feels.
- Frequency: train the area every few days rather than daily, so it has time to settle.
Every well-run gym class should be able to do this. At Lycan Strength, every class is scalable and coaches adjust movements to the person, so tell your coach about the niggle before the session starts. Our guide to how exercises are scaled shows what that looks like.
Keep the rest of you training
A sore shoulder does not stop you training legs. A grumbling knee does not stop you rowing with your arms, working your upper body or doing core work. Keeping the rest of your body active maintains fitness and strength, protects your mood, and keeps the habit going so you do not lose momentum.
A simple approach is to write down what you can do rather than what you cannot. A lifter with a sore elbow might still squat, deadlift with straps, push the sled and ride the bike. Someone with a grumbling Achilles might swap runs for rowing and cycling for a couple of weeks while working on calf strength. The list usually turns out much longer than expected.
It also helps the niggle. Staying active generally supports recovery, and building strength around a problem area, done carefully, is one of the most effective parts of rehab for most common gym complaints.
When to see a physio
Many niggles settle within a couple of weeks of sensible changes. It is time to get it assessed if:
- It is not improving after about two weeks of modified training
- It is getting worse, or spreading
- It keeps coming back every time you build up
- It is changing how you move, lift or walk
- It wakes you at night or affects work and daily life
Getting it looked at early is usually quicker and easier than waiting until it stops you training altogether. Most niggles are much simpler to sort out while they are still niggles.
A physio assessment looks at where the pain comes from, what makes it better and worse, and how you move and load the area, then builds a plan to get you back to full training. Our guide to physio for gym injuries covers common problems. Lycan Strength has on-site physiotherapy with 20% off treatment for gym members.
Red flags: stop and get help
Some symptoms are not niggles and should not be trained through. Get urgent help if you notice:
- Numbness around the genitals or buttocks, new bladder or bowel problems, or weakness in both legs with back pain: call 999 or go to A&E
- A swollen, hot, red calf, especially with chest pain or breathlessness: call 999
- Inability to bear weight, an obvious deformity, or a joint that locks or gives way: A&E or an urgent care centre
- Pain with fever or feeling generally unwell: contact NHS 111 or your GP
- Pins and needles, numbness or weakness spreading down an arm or leg: see your GP or physio promptly
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Questions
Should I train through pain?
Mild pain up to about 3 or 4 out of 10 that settles within 24 hours is usually fine. Sharp, worsening or lasting pain means you should reduce the load or change the exercise.
Is it better to rest a niggle completely?
Usually not. Most niggles respond better to modified training that keeps the area moving within comfortable limits.
How long should a niggle last before I see a physio?
If it has not improved after about two weeks of sensible changes, or it is getting worse or keeps returning, get it assessed.
Can I still go to classes with a niggle?
Usually yes, as long as you tell the coach so the session can be adjusted. Avoid movements that break the pain rules.
General guidance for healthy adults. If you have a medical condition, injury or are pregnant, check with a health professional before changing your training or diet.
