• Question: what makes your mucles ache?

    Asked by leighb09 to Jenni, Helen, Mark, Martin, Stu on 15 Jun 2011. This question was also asked by reess09, limey5298, aldredkwh.
    • Photo: Jenni Tilley

      Jenni Tilley answered on 14 Jun 2011:

      overuse!

    • Photo: Stuart Mourton

      Stuart Mourton answered on 15 Jun 2011:

      Muscles are made up of lots of individual fibres, a bit like a stretchy rope. When you exercise you are actually breaking individual fibres in this muscle, and when they grow back, they are stronger and there are more of them. That is why over time muslces get visably bigger if you lift really heavy weights and break lots and lots of these fibres. So when you have done lots of hard energy you have broken lots and lots of these small fibres. this is what makes the sore feeling.

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