After exercise, there are three situations to tell apart. The muscle tiredness that comes right after a session or an active day usually passes with rest. Muscle soreness tends to appear the next day or the day after, especially after unaccustomed exercise, and goes away within a few days. Pain that is sharp, unusual or comes with other signs, however, calls for medical advice.
For the first two, the essentials are simple: move gently, let time do its work and build back up gradually. Massage can bring comfort, but it isn't essential.
Why muscles feel tired or sore after exercise
A muscle that has worked hard temporarily loses a little of its strength: that's the normal tiredness of exercise. Soreness is something else. According to the American College of Sports Medicine (ACSM), it mainly appears after intense or repeated efforts in which the muscle works to brake a movement (walking downhill, lowering a load), particularly when these efforts are new or infrequent.
That's why getting back into sport, a mountain hike or moving house often leaves its mark over the following days. Increasing the effort gradually limits this.
Move gently rather than staying still
Light activity (walking, easy cycling, a few gentle stretching movements) is one of the techniques that slightly reduce soreness in studies; it doesn't make the feeling of tiredness disappear, though. There's no need to push: the aim is to get the muscle moving again, not to do another workout.
In the long run, regular physical activity remains the best foundation. The World Health Organization points out that any physical activity is better than none. And a muscle used to an effort gets less sore from it: one more reason to build back up gradually rather than all at once.
Rest, sleep, food, hydration: keep it simple
For ordinary muscle soreness, there is no special protocol to follow: get enough sleep, eat normally and drink when you're thirsty, especially after exercising in hot weather. There's no need to turn to dietary supplements: if the tiredness is unusual, long-lasting or occurs without exercise, it's a doctor you should see.
Where does massage fit in?
A 2018 meta-analysis that compared many post-exercise recovery techniques (99 studies) ranks massage among the most effective for reducing muscle soreness and the feeling of fatigue. Its authors remain cautious: the studies mainly involve massage given by professionals, a placebo effect cannot be ruled out, and some studies may have overestimated the results.
In practice, a gentle self-massage or a few minutes with a device can bring comfort to a sore muscle. It's not a must, and it replaces neither rest nor a gradual return to activity.
What about massage guns?
A massage gun massages by percussion. Studies, still few and small, mainly show a short-term gain in flexibility and mixed results on recovery. To use one well (areas, intensity, duration), see how to use a massage gun; to find out whether it's better to use it before or after a session, see massage gun: before or after a workout?
Komua 02 · Massage Gun is used in the same way: on muscles only, at a low intensity to start, without pressing.
When to avoid self-massage and ask for advice
Don't massage, and get medical advice, if you have:
- sudden sharp pain during exercise, swelling, bruising or a muscle you can no longer use normally: it may be an injury;
- pain that doesn't improve after a few days, or gets worse;
- lasting general fatigue, even without exercise.
After very intense exercise, severe muscle pain together with weakness and dark, tea-like urine may signal rhabdomyolysis, a breakdown of muscle tissue that can affect the kidneys: seek medical help without delay.
