What Causes Muscle Soreness (DOMS) and How to Ease It

What causes muscle soreness (DOMS)?

The muscle soreness you feel a day or two after exercise is called delayed onset muscle soreness, or DOMS. It is caused by tiny, normal stresses to muscle fibres when you do something new or harder than usual, and it is a normal part of getting fitter, not a sign of damage. It usually eases within a few days, and gentle movement, light stretching and rest help you feel better.

When you ask a muscle to do more than it is used to, the tiny fibres inside it experience small amounts of stress. Your body responds by repairing and rebuilding those fibres, and it is this normal repair process that leaves the muscle feeling tender, stiff and a little weaker for a short while. The soreness tends to show up several hours after you finish rather than during the session, which is why it is called delayed onset.

A few things make DOMS more likely. Trying an exercise for the first time, adding weight or distance, or doing lots of movements where the muscle lengthens under load, such as lowering into a squat or running downhill, all tend to bring it on. The good news is that this is exactly how your body gets stronger, and the same muscle will feel far less sore the next time you repeat the workout.

Is DOMS a good sign or a bad sign?

DOMS is generally a good sign. It usually means you challenged your muscles a little more than usual, and your body is busy adapting so it can handle that challenge more easily next time. It is a normal part of getting fitter rather than something to worry about.

That said, soreness is not a scoreboard. You do not need to feel sore after every session for it to count, and a lack of soreness does not mean you wasted your time. As your body gets used to a movement, you can keep making great progress with little or no soreness at all. Chasing that ache on purpose is not necessary and can just leave you too stiff to train well.

There is a difference between normal DOMS and pain that needs attention. Ordinary DOMS is a dull, general achiness across a muscle that eases day by day. If instead you have sharp or severe pain, pain that does not improve after several days, significant swelling, or dark coloured urine, that is not typical DOMS and it is worth seeing a doctor to be safe.

How do you ease DOMS faster?

The honest answer is that nothing makes DOMS disappear instantly, and most remedies offer modest relief rather than a cure. The single most reliable thing is time, since the soreness fades on its own within a few days. What you can do is help yourself feel more comfortable while your body does its repair work.

Gentle movement is one of the most useful tools. A relaxed walk, easy cycling or a light version of the exercise that made you sore gets the blood flowing and often takes the edge off the stiffness. Light stretching and gentle mobility can feel soothing too, as long as you keep it comfortable rather than forcing anything. Good sleep gives your body the best conditions to recover, and staying hydrated supports how you feel day to day. The table below sets out what genuinely helps and what does not.

Should you exercise with sore muscles?

In most cases, yes, you can keep exercising with mild to moderate DOMS. Light activity often helps you feel better rather than worse, so there is usually no need to stop moving altogether. The key is to be sensible about how hard you push and which muscles you use.

If your legs are sore from a big lower body session, you might do an upper body workout, a gentle walk or some easy mobility instead of another heavy leg day. Turning the intensity down and giving the sore muscles a lighter day lets them recover while you still stay active. Listen to your body, and if a movement makes the soreness feel sharp or much worse, ease off.

There are times to rest more fully. If the soreness is severe enough that your form breaks down, or you simply feel wiped out, taking an extra rest day is a perfectly good choice and will not undo your progress. Recovery is part of training, not a break from it.

How can you reduce DOMS next time?

The most effective way to reduce how sore you get is to ease in gradually. When you introduce a new exercise, add weight, or increase your distance, doing it in smaller steps gives your muscles the chance to adapt bit by bit. This reduces how sore you get, though it will not remove DOMS completely, especially when you try something genuinely new.

A gentle warm up before you train and some easy movement afterwards can help you feel more comfortable, and staying consistent is the real secret. Once your body has met a workout a few times, the same session that once left you aching for days will barely register. Progress that is steady rather than sudden is kinder to your muscles and easier to stick with.

This is where a well structured plan makes a real difference. A plan that builds up sensibly, spreads hard and easy days out, and mixes running, strength, HIIT and mobility helps you get fitter without being floored by soreness every week. Edge is built to do exactly that: it eases you in gradually with a balanced, fully personalised plan that flexes around your life, so you can keep showing up and feeling good.

Frequently asked questions

What causes muscle soreness after exercise?

The muscle soreness you feel a day or two after exercise is called delayed onset muscle soreness, or DOMS. It is caused by tiny, normal stresses to muscle fibres when you do something new or harder than usual, and it is a normal part of getting fitter, not a sign of damage. It usually eases within a few days, and gentle movement, light stretching and rest help you feel better.

How long does DOMS last?

DOMS usually appears within about 24 hours, peaks somewhere between 24 and 72 hours after your session, and then fades on its own. For most people it is gone within three to five days. If soreness lasts much longer than that, does not improve, or comes with significant swelling or dark urine, it is worth seeing a doctor to be safe.

Is it OK to work out with sore muscles?

In most cases yes. Light activity often eases mild to moderate soreness rather than making it worse. Go easier, or train different muscles, so the sore ones get a lighter day. If the soreness is severe or a movement feels sharp, ease off and take an extra rest day, which will not undo your progress.

What actually helps ease DOMS?

Gentle movement, light stretching, good sleep, rest and simply giving it time are the things that genuinely help. Their effect is modest, and nothing removes DOMS instantly. Staying hydrated supports how you feel, but there is no quick fix that makes the soreness vanish, so patience is the most reliable approach.

Can you prevent DOMS completely?

Not completely, especially when you try something new. Easing in gradually, building up weight or distance in smaller steps, and staying consistent all reduce how sore you get. Hard static stretching beforehand does not reliably prevent DOMS. The most dependable approach is steady progress that lets your muscles adapt over time.