DOMS · Why You're Sore Two Days Later

regulates · 2

• ←Cold Exposure & Recovery

  Cold-water immersion after training fairly consistently eases soreness: cooling slows the nerves that carry pain, and tighter vessels mean less leakage and swelling. But feeling less sore does not mean the tissue has been repaired; in the Hohenauer 2015 pooled analysis, function improved less consistently than soreness did.

  REVIEW · high

• ↔Warm-up & cool-down

  A cool-down cannot clear delayed-onset muscle soreness, because the soreness was never caused by lactate: lactate is cleared within an hour after you stop, while soreness peaks a day or two later. It comes from small injuries left by muscles working while they lengthen (eccentric contractions), and the repair that follows.

  RCT · moderateREVIEW · moderate

contrast · 2

• ≠Progressive overload

  Soreness is not a report card: someone who has trained regularly for years can have an effective session and barely feel sore, while a beginner can be too sore to walk downstairs after an easy one. Whether training works shows in strength and performance rising under progressive overload.

  RCT · moderate

• ≠Lactate threshold

  Lactate is usually cleared and reused within an hour after exercise stops, while delayed-onset muscle soreness arrives a day or two later, so the timing does not match. Lactate is not a fatigue waste product either; it is a fuel that the heart, other muscles and the liver take up and use.

  RCT · moderate