Does Soreness Mean Muscle Growth? The Truth

Does Soreness Mean Muscle Growth? The Truth

I get this question at least twice a week — usually via text, usually on a Monday morning from someone who can barely sit down after Saturday squats. Their legs are on fire and they want validation: "That means it worked, right?"

Let me be straight. No. The question of whether soreness means muscle growth has a pretty clear answer in the research, and it's not the one most people want to hear. Soreness after a workout tracks more with how unfamiliar the movement was or how much eccentric loading you threw at the muscle. Growth itself happens later, during recovery, and plenty of effective training blocks produce zero noticeable DOMS.

This post breaks down what the research actually tracks, why the soreness-equals-gains idea stuck around, and how to judge whether your training is working without waiting to see if you can get off the toilet the next morning.

The Science Behind Muscle Soreness

Delayed onset muscle soreness shows up when muscle fibers experience mechanical stress they aren't used to — especially during the lengthening phase of a rep. That slow descent on a Romanian deadlift where your hamstrings are screaming? That's the eccentric portion doing its thing.

A 2025 scoping review in PMC noted that DOMS stems from eccentric fiber disruption and the inflammatory cascade that follows, not from any direct signal that new muscle tissue is being laid down. Here's what actually matters about that distinction: soreness reflects a temporary stress response. It is not a measure of hypertrophy. You can create that stress with new exercises, higher volume, or longer eccentrics, and still see growth even when the next-day ache barely registers.

Now, this isn't magic — understanding the mechanism doesn't mean you can ignore soreness entirely. But it reframes what you're feeling.

Think of it like breaking in a new pair of shoes. First few wears, your feet are tender because the material is unfamiliar. After a week the discomfort fades. The shoes are still doing their job. Training works the same way once the body adapts.

What the Data Actually Shows

A Men's Health UK piece from 2025 cites experts who state DOMS is not a reliable marker of training effectiveness or muscle adaptation. Growth can and does occur without the stiffness that used to feel like a badge of honor.

Strength coaches quoted in Men's Health make the point even plainer: soreness level has nothing to do with how effective the session was. Zero correlation. The Henry Ford Health blog adds that regular exercisers often report no DOMS at all, and that absence can actually signal fitness gains rather than a lack of stimulus.

Medical News Today notes that muscle growth occurs during the recovery phase, with most muscle groups needing 48-72 hours before you hit them hard again. The rest period — not the soreness — is where the adaptation happens.

So why did the myth stick? Probably because soreness is tangible. You feel it in your quads when you walk downstairs carrying a laundry basket. Progress on a spreadsheet doesn't give you that same visceral feedback. But just because something is easy to feel doesn't mean it's measuring what you think it's measuring.

How to Judge Real Progress

Stop using soreness as the scorecard. Just stop.

Track the numbers that actually move: the weight on the bar, the number of clean reps, or how quickly you recover between sets. Those markers tell you whether the stimulus is still doing something. A training log beats a soreness diary every time.

When muscle soreness after workout does show up, treat it as information about load type or movement novelty — not proof the session was superior. If you want muscle soreness relief on days it appears, focus on sleep, protein timing, and light movement the next day. A 15-minute walk does more for you than sitting on the couch groaning about your glutes. I've seen it with clients for years.

Athlete recovery improves when you stop equating discomfort with results. The lifters who keep progressing long-term usually plan their training so they can hit hard sessions without needing two days to walk normally afterward. That's not softness — that's programming.

Common Misconceptions

One idea that refuses to die: a brutal next day proves you trained hard enough. The research keeps saying otherwise. Another version claims if you aren't sore, the workout was wasted. Regular trainees disprove that every single week.

And then there's the claim that more soreness always equals faster growth. Does it, though? The PMC review makes clear soreness comes from inflammation and fiber disruption, not from a direct link to hypertrophy. The sample sizes in DOMS research are often small and mostly use untrained subjects, so the applicability to someone who's been lifting consistently for two years is limited at best. You can generate the right mechanical tension without the inflammation showing up as pain that ruins your Wednesday leg session.

Does Soreness Mean Muscle Growth?

The evidence says no. It means your muscles encountered stress they weren't fully prepared for. Growth still happens when the stress is appropriate and recovery follows. Soreness or not.

I've trained people who never got sore and put on measurable size in 12 weeks. I've trained people who were destroyed after every session and stalled because they couldn't recover fast enough to train with any consistency. Train for measurable progress, not for the feeling the next morning.

Ready to make recovery part of your routine? Shop Last Rep →

Responsible Use Note: THC products like Last Rep contain Delta-9 THC. Consume responsibly, start low, and check local laws. Not for use if under 21, pregnant, or operating machinery. Consult a healthcare professional for personalized advice.