DOMS · Why You're Sore Two Days Later延迟性酸痛 (DOMS) · 为什么练完第二天才酸

Place · Level 3 · Movement

酸痛在 24-72 小时才达峰 · 不是乳酸, 是离心微损伤的修复-炎症反应 · 酸 ≠ 练到位 · 拉伸防不了它

The soreness timeline

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酸痛的时间表

Try a new movement, or train hard after a long break, and the day itself often feels fine — yet you wake the next morning, or the one after, with stiff, aching muscles. That's delayed onset muscle soreness (DOMS).

Its timeline is regular: little pain in the first hours, a peak at 24-72 hours, then gradual easing, gone within 5-7 days (Cheung 2003). The word 'delayed' is the whole case's key clue.

That timeline alone rules out the most popular explanation. If soreness were caused by 'lactic acid build-up', it should hurt most when you're most tired and lactate is highest — yet the reality is no pain then, pain a day or two later. Something the body clears within an hour of finishing exercise cannot explain soreness that arrives two days on. The next scene formally sends the 'lactic acid' misunderstanding on its way.

Read story Open mechanism

本站提供科普与一般性建议，不替代医师诊断或处方；有症状或正在服药请咨询合格医师。 Educational content, not medical advice — consult a clinician for diagnosis or treatment.

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DOMS · Why You're Sore Two Days Later延迟性酸痛 (DOMS) · 为什么练完第二天才酸

Place · Level 3 · Movement

酸痛在 24-72 小时才达峰 · 不是乳酸, 是离心微损伤的修复-炎症反应 · 酸 ≠ 练到位 · 拉伸防不了它

The soreness timeline

Stop 1/5

酸痛的时间表

Try a new movement, or train hard after a long break, and the day itself often feels fine — yet you wake the next morning, or the one after, with stiff, aching muscles. That's delayed onset muscle soreness (DOMS).

Its timeline is regular: little pain in the first hours, a peak at 24-72 hours, then gradual easing, gone within 5-7 days (Cheung 2003). The word 'delayed' is the whole case's key clue.

That timeline alone rules out the most popular explanation. If soreness were caused by 'lactic acid build-up', it should hurt most when you're most tired and lactate is highest — yet the reality is no pain then, pain a day or two later. Something the body clears within an hour of finishing exercise cannot explain soreness that arrives two days on. The next scene formally sends the 'lactic acid' misunderstanding on its way.

Read story Open mechanism

本站提供科普与一般性建议，不替代医师诊断或处方；有症状或正在服药请咨询合格医师。 Educational content, not medical advice — consult a clinician for diagnosis or treatment.