When you start a new workout, or return to exercise after a long break, you may have noticed your legs aching on the stairs the next day or the day after. This feeling is known as delayed onset muscle soreness, or DOMS, and is an experience almost everyone who exercises encounters. So is this muscle soreness normal, why does it occur, how can it be eased and when should you be more careful? In this article we answer these questions in plain language. This information also applies to those training at O'Wellness Dragos.

What is DOMS?

DOMS stands for delayed onset muscle soreness and describes muscle tenderness that appears roughly twelve to forty-eight hours after training. It is usually pronounced in movements you are not used to or in eccentric movements where the muscle bears load while lengthening. Examples include the lowering phase of a squat, walking downstairs and lowering a dumbbell.

The soreness usually peaks on the second day after training and eases within a few days. The adaptation process at a microscopic level in the muscle and the accompanying tenderness are seen as a normal part of getting stronger.

Why does it occur?

Although the exact mechanism of DOMS is still being researched, the common view is that small damage to muscle fibres and connective tissue after unaccustomed load, and the rebuilding process that follows, lead to tenderness. This does not mean soreness is proof that the workout was effective; progress is possible without soreness too.

So using muscle soreness as a measure of success is not correct. What matters is regular and gradual progress. Instead of aiming for extreme soreness after every session, raising load and volume slowly is a healthier path.

Who feels it more?

People just starting to train
People returning to exercise after a long break
People trying a new movement or type of exercise
People who suddenly raise volume or intensity
In eccentric-heavy work, such as downhill running or slow lowering movements

In people who train regularly, soreness decreases over time as the muscle adapts when the same movement is repeated. This is called the repeated bout effect.

What can be done to ease it?

Light movement

Instead of resting completely, low-intensity activities such as walking, light cycling or swimming support circulation and ease the sensation in most people.

Enough sleep and nutrition

Muscle repair takes place during sleep. Adequate protein, overall energy intake and water support recovery.

Massage and foam roller

Light massage or foam roller use can provide temporary relief. Applying very hard pressure can increase soreness; be moderate.

Heat applications

A hot shower, sauna or steam room can help with relaxing. If you have a heart, blood pressure or other health condition, consult your doctor before heat applications.

Can you train while sore?

With mild to moderate muscle tenderness you can generally do light, controlled training for the same muscle group without loading it very heavily. Warming up can make the soreness feel temporarily lower; but this does not mean the muscle is fully recovered. If the pain is severe or the range of motion is noticeably restricted, it is wiser to rest that area and work another one.

Soreness is not always a reason to give up the programme, but listening to your body should always come first.

Normal soreness or a warning sign?

DOMS is usually a tenderness on both sides, spread through the whole muscle and easing with movement. In contrast, some symptoms call for more care.

Sudden, sharp pain focused on one point
Swelling, marked bruising or increased warmth
Locking, slipping or numbness in a joint
Pain lasting more than five to seven days that does not ease
Severe muscle pain with very dark urine and weakness

If you have any of these symptoms, stop exercising and see a healthcare professional. Especially when very dark urine and severe muscle pain occur together, urgent evaluation may be needed.

A sample recovery day

On the second day after a heavy leg workout, you can try a flow like this. Start the morning with a fifteen-minute brisk walk. During the day do a few twenty to thirty-second light stretches and hip mobility drills. In the evening take a hot shower, eat a balanced meal with protein and go to bed at your normal time. This simple routine helps the soreness pass more comfortably in most people.

Overdoing stretching or heavy massage to get rid of the pain can backfire. Moving tender muscles gently and in control is enough. For the use of painkillers, get information from a doctor or pharmacist; continuously using medication on your own is not recommended.

Common myths

Lactic acid causes muscle soreness

This is a widespread misconception. Lactate is cleared from the body shortly after exercise and is not the cause of delayed soreness.

If there is no soreness, the workout did not work

No. Especially in experienced athletes, progress happens without marked muscle soreness too.

You must keep stretching the sore muscle

Although aggressive stretching may bring temporary comfort, there is no strong evidence that it speeds healing. Light and comfortable movement is often enough.

Returning to the programme after soreness

After the soreness has passed, working the same movement at a slightly more manageable level in the next session shows the muscle has adapted. Raising the load gradually by ten to twenty percent keeps soreness under control while maintaining progress. If you experience the same severe soreness in every session, you may consider that your programme is advancing too fast.

Nutrition and recovery support

Adequate protein, energy and fluid intake are the basic requirements for muscle repair. A balanced meal after training supports recovery when it contains both protein and carbohydrate. Micronutrients obtained from seasonal vegetables and fruit are also important for general health. For special supplements, evidence-based information and consulting a specialist are necessary.

Alcohol can affect sleep and recovery negatively; being moderate or avoiding it after intense training is more suitable. In short, managing soreness relies not on one trick but on the combination of sleep, nutrition, movement and time.

Tips for prevention

It is neither possible nor necessary to eliminate DOMS entirely; but its severity can be reduced. Raising load and volume slowly when starting a new programme, doing a proper warm-up and protecting sleep and nutrition help keep the soreness manageable.

At O'Wellness Dragos our trainers build beginners' programmes gradually so that soreness stays manageable. When you move to a new programme, a mild feeling of loading in the first weeks is normal; but if there is anything that worries you, do not hesitate to talk to your trainer or a health professional.

Post-workout muscle soreness (DOMS): is it normal and when to worry?