Delayed onset muscle soreness — DOMS — is the ache that shows up 24 to 48 hours after a session, usually worst on day two. It gets treated as a badge of honor in a lot of gym culture: sore means you worked. That framing is only half right, and getting the other half wrong is exactly the kind of thing that costs more after 40 than it did at 25.
Is DOMS a sign of muscle growth?
Not directly. Soreness comes from microtrauma and the inflammatory response to it — mostly from movements your body isn't adapted to yet, whether that's a new exercise, a heavier load than usual, or more eccentric (lengthening) work than you've done recently. Muscle growth comes from progressive overload and recovery over time, not from the soreness itself. You can make real progress with minimal soreness once your body adapts to a routine, and you can be sore without much long-term adaptation happening at all. Soreness is a signal that something was new or harder than your body expected — not a scoreboard.
What actually helps sore muscles after a workout
Nothing eliminates DOMS outright, but several things genuinely shorten it or make it more manageable:
- Light movement, not full rest. Easy walking, light cycling, or a low-intensity session on the same muscle group increases blood flow and tends to ease soreness faster than sitting still.
- Protein and total calories. Recovery is a building process — under-fueling it slows the repair that resolves soreness.
- Sleep. The bulk of real recovery happens here. Cutting sleep short is one of the most common, least talked-about ways people extend their own soreness.
- Gradual progression. The single biggest lever. Adding volume or intensity gradually — instead of jumping hard into a new movement or program — produces far less soreness for the same eventual training effect.
- Hydration. Unglamorous, but real — dehydration measurably worsens perceived soreness and slows recovery markers.
Ice baths, heavy stretching, and massage guns can make soreness feel more tolerable in the moment. The evidence that they meaningfully speed the underlying recovery process is weaker than the marketing around them suggests — worth doing if it helps you personally, not worth treating as the fix.
How to get rid of sore muscles overnight — the honest answer
You mostly can't, and anything promising that is overselling it. What you can do overnight is reduce how bad it feels and support the process already underway: light movement before bed, adequate protein at your last meal, and prioritizing sleep quality over any single recovery gadget. The soreness resolves on its own timeline — usually 48 to 72 hours — regardless of what's marketed as a shortcut.
When soreness stops being normal — and why this matters more after 40
Normal DOMS is diffuse, symmetric, and fades within a few days. Worth paying real attention to instead: sharp or localized pain (as opposed to a dull ache), soreness that gets worse instead of better past 72 hours, swelling, or pain that changes how a joint moves. At 25, recovery capacity often masks the difference between "sore" and "actually hurt" — the body simply resolves both faster. That margin shrinks with age, which is exactly why distinguishing normal soreness from a real signal to back off matters more here than it did two decades ago. This is training information, not medical advice — if something feels genuinely wrong rather than just sore, that's a conversation for a doctor, not a training article. See the full Disclaimer for more on this.
More on how recovery fits into the overall approach lives on The Method page.