Good Pain or Warning Pain After 60? Training Soreness, Adaptation and Injury

 

Man training to heavy a weight vs man training appropriately

How can you tell whether exercise discomfort is a normal response to training, a reason to adapt the session, or a warning that you may be causing or aggravating an injury? Navigating the fine line between training soreness vs injury after 60 is one of the most critical skills you need to build a resilient body for longevity.

There was a stage in my campaign against sarcopenia when nearly every part of my body appeared to have its own definition of progress.

My muscles would report the familiar soreness of a useful workout. My heel would object to walking. A finger that I had originally hurt while getting into a car would complain whenever I gripped something. My proximal biceps tendon—or at least the region I suspected was the tendon—began lodging a more formal and persistent complaint. Meanwhile, my feet demonstrated that a man may be preparing for the Brooks Range of Alaska and still be defeated in Battersea Park by one English blister.

The Department of Musculoskeletal Complaints was extremely busy. Unfortunately, its director was me.

I had acquired an idea that was understandable, hopeful and only partly true. Perhaps an ageing tendon or joint was objecting because I had finally begun retraining it. If I continued carefully, I thought, the tissue would adapt and become more useful. Therefore, perhaps the discomfort was simply part of the renovation work.

There is an important truth beneath that belief. Muscles, tendons and joint systems remain responsive to exercise as we age. Appropriate loading can improve strength, function and physical capacity. Rehabilitation sometimes includes a degree of tolerable discomfort.

But none of that makes this conclusion safe:

Pain means adaptation, so I should continue.

The better principle is:

Loading stimulates adaptation. Pain does not.

Pain may accompany useful loading, unfamiliar exercise, a temporary flare, rehabilitation or injury. It is information, but it is not a certificate confirming that something beneficial is happening.

This article cannot diagnose an injury, and neither can the person experiencing the pain simply by studying its character. What it can do is help us ask better questions, recognise important patterns and choose between three sensible responses: continue, adapt or stop.

The belief that pain must mean progress

The old slogan “no pain, no gain” is particularly seductive when we begin training later in life. We know that ageing and inactivity can reduce capacity. We also know that the body requires a challenge if it is to become stronger. It is easy to blend those two truths into a third statement that does not follow: if a challenge produces pain, the pain must be evidence of the body rebuilding itself.

I was especially vulnerable to this idea because I had spent years as a landscape gardener. A strength session, a pack carry or a series of step-ups onto a dining chair seemed light beside a day of digging, lifting and hauling. I considered myself tough enough to tolerate the workload.

Yet tolerance is not the same as preparedness. My determination could authorise another session; it could not compel a tendon, joint, foot or nervous system to recover on my preferred timetable.

Nor does ageing turn every sensation into damage. If we become so frightened of discomfort that we never challenge ourselves, we lose the very stimulus that helps preserve muscle, strength, balance and independence. The answer is not to treat every ache as danger. It is to stop using discomfort itself as the measure of a successful training dose.

The useful target is a load that is sufficient, progressive and recoverable. 

Safe Exercise Pain Limits for Seniors: How the Body Adapting Over 60 Really Works

This is the hopeful foundation beneath everything else: the body after 60 is not a museum exhibit.

Muscles can become stronger and larger. The nervous system can become better at recruiting them. Balance, coordination and confidence can improve. Tendons are living connective tissues, not inert ropes supplied at birth and gradually used up. Research shows that mechanical loading—particularly resistance training—can change tendon stiffness, material properties and, in some circumstances, dimensions.

“A stiffer tendon” sounds alarming in ordinary conversation, but biomechanics uses the word differently. Greater mechanical stiffness can mean that a tendon stretches less under a given force and transmits muscular force more effectively. It does not necessarily mean that the person feels stiff or that the joint has lost mobility.

Age may influence the speed and magnitude of adaptation, and different tissues do not necessarily progress together. Muscles, skill and confidence may improve before local connective tissues are ready for the same increase in weight, volume or frequency.

That mismatch matters. At 62, youthful ambition is still occupying the executive office, but the connective-tissue department occasionally requires the paperwork in triplicate.

The practical lesson is encouraging rather than gloomy:

A tendon may need load in order to recover, but it needs a load it can adapt to—not merely one its owner can endure.

Pain is information, not a damage meter

Pain is real, but it is not a simple readout of tissue condition. The International Association for the Study of Pain describes it as a sensory and emotional experience associated with, or resembling that associated with, actual or potential tissue damage. Its accompanying explanation emphasises that pain is personal and influenced by biological, psychological and social factors.

That does not mean pain is imaginary. It means the relationship between pain and tissue damage is not one-to-one.

A painful tendon is not automatically torn. A joint can hurt without having suddenly sustained new structural damage. Conversely, mild pain does not prove that the load is sensible, and the absence of pain cannot guarantee that an exercise is safe.

Pain is therefore one item of evidence. Other useful evidence includes:

  • where the sensation is located;

  • whether it arose during the activity or hours later;

  • whether it is broad or very localised;

  • whether it changes technique, gait, strength or function;

  • whether there is swelling, bruising, instability or altered sensation;

  • how it behaves later that day and the following morning;

  • whether it improves, persists or returns whenever the same area is loaded.

None of these observations supplies a home diagnosis. Together, however, they can help us decide whether the plan should continue unchanged.

What ordinary training soreness usually looks like

During a demanding exercise, normal sensations can include muscular effort, fatigue, a temporary burning feeling, appropriate breathlessness and the struggle to complete the final repetitions while maintaining sound technique.

Those sensations differ from a sudden sharp pain, a tearing feeling or pain that forces us to twist, limp or alter the movement. Context always matters: burning in a working thigh during a controlled squat is not the same as chest pressure or unexplained severe breathlessness.

Delayed-onset muscle soreness, or DOMS, usually appears after an unfamiliar or unusually demanding activity rather than as a dramatic pain during it. It often becomes noticeable over the next day, commonly peaks somewhere within roughly 24 to 72 hours, and then gradually improves. It is usually felt through the worked muscle, with tenderness or stiffness, rather than as one precise painful point at a tendon or joint.

DOMS is common, but it is not compulsory. A workout can stimulate strength and muscle adaptation without producing soreness. Severe soreness does not earn extra marks from the Faculty, and the absence of soreness does not mean the workout failed.

As the body becomes accustomed to an activity, the same exercise usually causes less soreness. This is known as the repeated-bout effect. Progressively introducing unfamiliar exercise can therefore reduce the muscular damage and soreness caused by later exposures.

Ordinary soreness should trend towards recovery. Soreness that is persistent, worsening, unusually severe or accompanied by a marked loss of function deserves more caution and, when appropriate, professional advice.

When a tendon objects

Tendon problems are often less theatrical than an acute muscle tear. They may develop gradually as repeated loading exceeds what the tissue can currently tolerate. The relevant dose is not just the weight in one session. It includes the frequency of exposure, repetitions, sets, range, speed, joint position, exercise choice and recovery between sessions.

My own suspected proximal biceps tendon symptoms were localised and recurring. My muscles were perfectly willing to keep negotiating on my behalf, but the same area repeatedly objected. That pattern felt different from broad muscle soreness after a productive session.

This does not allow me to diagnose tendinopathy. Local pain may arise from several structures, and pain intensity does not reveal tissue condition with precision. It does, however, justify taking a recurring local complaint more seriously than I once did.

Professionally assessed tendinopathy is often treated with progressive tendon-loading exercise. The 2024 clinical practice guideline for midportion Achilles tendinopathy, for example, recommends tendon-loading exercise as a first-line treatment rather than complete rest. Some individual rehabilitation programmes allow tolerable pain while symptoms and function are monitored.

That is not permission to nominate every new tendon pain as “rehabilitation.” A clinician may knowingly prescribe and monitor discomfort within a diagnosis-specific programme. I was simply a determined man in his house attempting to negotiate directly with his upper arm.

Useful questions include:

  • Does the same exercise repeatedly provoke the same point?

  • Is the symptom settling between exposures, or slowly accumulating?

  • Has my technique, grip, range or frequency changed?

  • Did I increase weight, repetitions and sessions at the same time?

  • Am I treating today’s tolerable symptom as proof that tomorrow’s response will also be tolerable?

Tendons need load, but a recurring tendon-region complaint is an invitation to review the dose—not a congratulatory message from the adaptation department.

When the original injury happened somewhere else

Not every problem noticed during training was created by training.

I first hurt my left ring finger while getting into a car. Later, gripping resistance bands and practising the violin affected the same area. At various times I wondered whether the culprit was a ligament, tendon, pulley or arthritic joint. Without a proper assessment, confidently choosing among them would be storytelling rather than diagnosis.

The reliable part of the story is simpler: the original incident occurred outside training; later loading exposed or aggravated the symptoms.

This distinction matters. We often blame the most recent exercise because it is where a problem became obvious. In reality, the exercise may have loaded a structure that was already irritated or vulnerable. But the reverse mistake is equally unhelpful. Saying “training did not cause it” does not make repeated aggravation sensible.

Resistance bands provided an additional lesson. I was gripping them much harder than the exercise required, transferring muscular determination into unnecessary local stress. The bands had not demanded a trial of grip strength. That was an unsolicited extra service I was providing.

Equipment technique matters. Changing the grip, load, range or exercise may preserve the training benefit while reducing stress on the irritated area. There is no prize for using five times the necessary grip force to perform an exercise aimed at some entirely different body part.

Joints are not disposable hinges

It is common to imagine osteoarthritis as a worn mechanical hinge that can only deteriorate with use. A human joint is more complicated. It includes bone, cartilage, capsule, ligaments, tendons, muscles, synovial structures and the sensory and motor systems that control movement.

Exercise does not erase osteoarthritis or restore every joint to its youthful structural condition. It can nevertheless improve the performance of the joint system by strengthening surrounding muscles, improving control and stability, expanding usable capacity, and improving balance and confidence. NICE recommends tailored therapeutic exercise—including local strengthening and general aerobic fitness—for people with osteoarthritis. It also warns that pain may initially increase, while explaining that consistent exercise can improve function, quality of life and pain.

That is more nuanced than either “movement wears joints out” or “exercise rejuvenates every joint.” Some discomfort during an appropriately chosen programme for a longstanding joint condition may be acceptable. New sharp pain, marked swelling, locking, instability, giving way, loss of function or progressive worsening requires greater caution.

Nor can I claim that gripping resistance bands caused osteoarthritis in my fingers. Hard gripping may have irritated an already vulnerable joint or another hand structure, but the chronology does not establish a diagnosis or cause.

The goal is to improve what the whole joint system can do, not to pretend that structure, symptoms and function are identical things.

A sensible word about fascia

Fascia is real connective tissue, not merely a fashionable word printed on foam rollers. It participates in movement, force transmission and sensation, and it responds to mechanical conditions. Ordinary resistance training, walking, cycling and other movement already load fascial tissues.

What we should avoid is leaping from that truth to claims that one special routine “breaks up” fascia, flushes toxins from it or permanently reorganises the entire body. The evidence for prescribing fascia-specific programmes is far less mature than the evidence supporting resistance training, cardiovascular exercise and diagnosis-specific rehabilitation.

We can take fascia seriously without requiring it to explain every complaint or purchasing an instrument with which to tenderise ourselves like a steak.

The Brooks Range Blister Department

One of my first pack carries took place around Battersea Park. I was wearing unsuitable trainers and had 10 kilograms in the pack. Ten kilograms did not seem excessive to a former landscape gardener preparing, at least in spirit, for Alaska.

Partway around the park, I noticed tingling in my foot. I ignored it and continued along the full long route. Just past the point of no return, the tingling became soreness. I tried walking on the edge of my foot, a technique that combined poor biomechanics with tremendous optimism. By the time I got home I had a whopper of a blister.

That blister was not my skin adapting. It was a friction injury. Cardiovascular fitness, leg strength and determination had not automatically prepared one particular patch of skin for the footwear, load and distance I had chosen.

I realised that proper walking boots might be useful before attempting further pack carries, so I took a Lime public e-bike to a sports shop in Fulham. It rained. I became soaked and freezing and had to buy gloves to stop my hands freezing on the ride back. I also purchased proper blister plasters, the need for which had by then been established beyond peer review.

I was delighted with the boots. I sat looking at them several times before I dared put them on because the foot was still so sore. Once the blister had settled, I managed a shorter walk carrying 6 kilograms without pain and wished I had bought the boots before beginning the experiment.

That sequence illustrates the “Adapt” part of Continue, Adapt or Stop. I did not abandon pack carrying forever. I allowed the injury to settle, improved the equipment and returned with less weight and distance.

The episode also illustrates specificity. Your heart may be ready while your feet are not. Your legs may be ready while your skin is not. Your muscles may be ready while a tendon is still catching up. The body does not issue one universal certificate of preparedness.

For completeness, Battersea later supplied a more acute lesson. I stepped from a kerb onto a leafy road and put my foot down an open drain. My ankle hurt for about a week. Our ancestors used pits to trap huge animals in a similar way, although I doubt the local authority intended to capture a short landscape gardener.

The drain was an external event with an immediate consequence. The heel trouble that followed my overenthusiastic training was different: a slow grind without one memorable moment.

How reasonable training becomes too much

My persistent heel pain was worst on waking and during the first steps of the day. I had been doing pack carries, step-ups onto a dining chair and a plethora of stretching and strengthening exercises. My enthusiasm greatly exceeded my ability—or willingness—to recover between them.

I refused to acknowledge this. I had been a tough landscape gardener. Compared with work, the exercise seemed light. I continued until I was aching in several places, exhausted and possessed of “no idea why.”

The explanation did not require one monstrous workout. It was the accumulation of individually arguable decisions.

A useful way to think about developing overload is as a mismatch between:

The load and frequency we impose and the tissue preparedness and recovery capacity available to absorb them.

It is not a clinical equation and cannot calculate an injury threshold. It is a reminder that the same session lands differently depending on what surrounds it.

The total may be increased by:

  • adding too much weight;

  • increasing sets, repetitions, distance and frequency together;

  • introducing unfamiliar angles or exercises;

  • returning after inactivity;

  • changing footwear, equipment or terrain;

  • poor technique or unnecessarily hard gripping;

  • inadequate sleep or nutrition;

  • caring, household or occupational demands that the training log does not record;

  • repeatedly loading a mild, persistent warning before it settles.

This became especially important while caring for my elderly mother. A training watch can record a cycle ride or strength workout. It may not understand the physical and emotional load of disturbed sleep, lifting, anxiety, hospital visits and ordinary caring work. One reasonable session can become excessive when placed inside an unreasonable week.

Professor Blackthorn—my AI research and training companion—had already tried to teach me that recovery was not optional. I remained impressively resistant to education. It was only after I bought my Garmin and saw recovery and stress patterns represented on my wrist that the science already under my nose became difficult to ignore.

The watch did not diagnose my heel, biceps or exhaustion. It simply made accumulated strain more visible and forced me to reconsider what experience and advice had already been saying. Professor Garmin gets a vote, not a veto, but on this occasion his vote helped overturn the chairman.

Recovery is not merely what we do after an injury. It is the process through which an appropriate training stimulus becomes useful adaptation.

Continue, adapt or stop?

No article can provide a universal pain threshold or guarantee safety. A numerical pain scale may be useful within an individual rehabilitation plan, but “three out of ten” cannot establish that every tissue, condition and exercise is safe.

The following framework is therefore a set of response options, not a diagnostic test.

Continue

Continuing may be reasonable when the sensation is mild and familiar, located mainly in the trained muscles, consistent with ordinary effort or DOMS, not changing your movement, and improving rather than worsening.

Continuing does not necessarily mean repeating the same hard session. With DOMS, gentle movement, an easier session or training another area may be more useful than attacking the same sore muscles again.

Ask:

  • Is this a familiar muscular sensation rather than one precise recurring point?

  • Can I maintain normal technique and function?

  • Is it already trending towards improvement?

  • Are swelling, instability, bruising and altered sensation absent?

Adapt

Adapt when the symptom is more localised, the same exercise repeatedly provokes it, technique starts changing, recovery is taking longer, performance is deteriorating, or the tissue appears able to tolerate some loading but not the planned dose.

Adaptation may mean:

  • reducing weight, repetitions or sets;

  • shortening the distance or reducing frequency;

  • changing the grip, range, speed, exercise or equipment;

  • substituting a tolerable movement;

  • allowing more recovery time;

  • stopping the provoking exercise while training unaffected areas;

  • seeking qualified help with a graded rehabilitation plan.

The response later that day and the following day matters. If every exposure produces a larger or longer reaction, the plan is not becoming more successful merely because you can complete it.

Adapting is not surrender. My return to a shorter 6-kilogram pack carry in proper boots was training intelligence, even if purchasing the boots after manufacturing the blister was intelligence arriving on a delayed service.

Stop and assess

Stop the particular exercise and seek appropriate medical or physiotherapy advice when symptoms include sudden or severe pain, a suspected traumatic injury, substantial swelling or bruising, immediate loss of strength or function, deformity, inability to bear weight or use the area normally, instability, locking or giving way, numbness or unexplained weakness, or pain that forces limping or distorted technique.

Also seek advice for symptoms that worsen despite sensible modification, repeatedly return, fail to settle as expected, or leave you uncertain whether exercise is safe. This is not an exhaustive list, and urgency depends on the circumstances.

Medical red flags
Stop exercising and seek urgent help for symptoms that may not be musculoskeletal. In the UK, call 999 for suspected heart attack or stroke, severe breathing difficulty, collapse or loss of consciousness. Possible heart-attack symptoms include persistent chest pressure, tightness or squeezing, sometimes spreading to the arm, neck or jaw. Stroke signs can include sudden facial weakness, arm weakness or speech difficulty. A smartwatch cannot rule these conditions in or out. Do not wait for wearable data to become more convincing.

Recovery is part of the programme

We sometimes speak of training as the work and recovery as the absence of work. Physiologically, recovery is where the body attempts to turn the training dose into something useful.

Good recovery practice includes:

  • spacing unfamiliar or demanding sessions;

  • changing one major training variable at a time;

  • avoiding simultaneous leaps in weight, volume, frequency and distance;

  • allowing joints and tendons time to catch up with muscular progress;

  • supporting training with adequate sleep and nutrition;

  • counting physical work and caring demands even when no watch records them;

  • checking symptoms later that day and the following morning;

  • responding early when one local complaint keeps returning;

  • rebuilding gradually after illness, inactivity or injury.

None of this can prevent every injury. Accidents occur, illnesses intervene, and sometimes a carefully planned programme still exposes a problem. Sensible progression simply reduces avoidable risk and improves the likelihood that the body can recover from what we ask of it.

What I would do differently

Looking back, I would not remove challenge from my training. At 62, preparing for future adventures and resisting sarcopenia requires challenge. I would change how I interpret the response.

I would:

  • begin below my maximum tolerance rather than treating it as the starting prescription;

  • progress one important variable at a time;

  • stop treating pain as praise;

  • respond to recurring local symptoms sooner;

  • adapt one exercise without abandoning all movement;

  • allow tendons, joints, feet and skin time to develop relevant capacity;

  • consider sleep, caring and life stress as part of the total load;

  • seek assessment when symptoms are concerning, unclear or persist despite modification.

Most importantly, I would stop asking only, “Can I endure this session?” and ask, “Is this a dose from which I am recovering and becoming more capable?”

Build capacity, not a catalogue of injuries

Training after 60 is not an attempt to persuade an ageing body to behave as if it were 25. Nor is it a slow retreat from every demanding sensation. It is a collaboration with a body that remains remarkably adaptable but does not adapt equally in every tissue or on command.

Some exercise discomfort is normal. Some rehabilitation is uncomfortable. Some pain reflects a temporary flare rather than fresh damage. But pain itself is not the strengthening ingredient, and tolerating more of it is not the objective.

The Brooks Range still matters to me because it represents capability: the ability to carry a pack, cross difficult ground and remain useful in my own life. That capability will not be built by avoiding every challenge. Neither will it be built by collecting avoidable injuries as proof of commitment.

The aim is not to prove how much pain an ageing body can tolerate. It is to help that body become capable of carrying us further.

Sources and further reading

This article offers general educational information, not an individual diagnosis or rehabilitation prescription. If symptoms are severe, persistent, worsening, recurrent or affecting normal function—or if you are unsure whether exercise is safe—seek advice from an appropriate healthcare professional.


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