DOMS explained

DOMS is short for delayed onset muscle soreness: the sore, stiff feeling that turns up 12 to 48 hours after training. It is most likely when the workout was new, harder than usual, or full of slow lowering under control.

Soreness can follow productive training, but it is not proof the session was better. You can build muscle without getting sore at all, and you can be wrecked by a workout that was mostly just unfamiliar.

What soreness does and does not mean

• Soreness usually means the stimulus was new or unusually stressful.
• Less soreness over time can mean your body has adapted to the movement.
• No soreness does not mean no progress.
• Extreme soreness can interfere with technique and recovery.

The repeated bout effect is one reason soreness fades. Repeat a movement over time and your body gets better at handling it. That is a good thing. A program that always sets out to make you sore may be changing things too often to build skill or show measurable progress.

You can usually train through mild soreness if the warm-up makes it feel better and your technique stays clean. Heavy soreness that changes how you move is a different story. Then pick easier work, train something else, or take a recovery day.

The best soreness strategy is boring: progress gradually, warm up properly, sleep enough, eat enough protein and calories for your goal, and avoid huge spikes in volume. Recovery is easier when training stress does not leap around.

Use soreness as one data point. Read it next to performance, mood, joint comfort, and your recent training log. If performance is improving and the soreness stays manageable, you are probably in a good place.