What is muscle soreness?

Muscle soreness is caused by lactic acid not burning because of lack of oxygen, and therefore accruing in the muscles: it can develop after a 35-45 second hard, high intensity muscle workout.

If you are a beginner, your muscles haven't done the work they were developed for (and that they should manage to do soon).Muscle soreness has different levels: but if it hurts a lot it should be taken seriously and you will need rest. You cannot do exercises focusing on different movements because of the pain, as this could lead to injuries.You can train with light muscle soreness. If you don't train regularly, you will often have muscle soreness, because your muscles will be unable to get used to the irregular new loadings.

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