The gym mythology runs deep: if you’re not sore the next day, you didn’t train hard enough. Coaches say it. Influencers say it. Your friend who deadlifts says it. The trouble is that exercise science has been pretty clear for at least a decade that delayed-onset muscle soreness — DOMS — correlates poorly with hypertrophy, strength gain, or training quality. Confusing soreness with progress sends people chasing the wrong feedback signal, often at the cost of consistency and recovery.
What DOMS actually measures
DOMS is the inflammatory response to unfamiliar mechanical stress, particularly from eccentric (lengthening) contractions. It’s most pronounced when you do a movement your body hasn’t adapted to — think the first day of running after a year off, or trying split squats for the first time. Studies including work by Brad Schoenfeld and others have shown that as you adapt to a stimulus, soreness diminishes even while gains continue. In other words, the more trained you become, the less you should expect soreness from the same workload, even though that workload is now producing better results than when you were a beginner.
You can grow muscle without ever feeling sore
Research on hypertrophy consistently finds that what drives muscle growth is mechanical tension, training volume, and proximity to failure — not soreness. A meta-analysis-friendly summary: hit each muscle group with enough hard sets per week, in the 5–30 rep range, with reasonable proximity to failure, and you’ll grow. Whether you wake up sore is largely irrelevant. Some advanced lifters report almost never being sore from their main compound lifts and still adding weight to the bar quarter after quarter. The barbell knows; the soreness doesn’t.
Chasing soreness can sabotage training
If you’re using DOMS as your scorecard, you’ll be tempted to constantly switch exercises and add novel movements just to feel sore again. That novelty produces more soreness but generally less progress, because consistent overload on a stable selection of lifts is what drives long-term gains. Chasing soreness can also push you into unnecessary recovery debt — training with sore muscles when frequency would have helped, or skipping sessions because you’re “not recovered” when you actually are. Both errors cost you trained volume, which is the variable that actually matters.
The bottom line
Soreness is information, but it’s mostly information about novelty and recovery — not about whether the workout “worked.” Track the variables that actually correlate with progress: weight on the bar, reps at a given load, sets completed per week, and how you feel mid-workout. If those numbers are trending in the right direction, your training is succeeding whether or not your hamstrings hurt the next morning. The soreness-as-success story makes for satisfying gym banter, but the people making real progress year over year are usually the ones who stopped paying attention to it.
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