The myth that lactic acid causes the ‘burn’ we feel during exercise is actually a long-lasting misunderstanding.
Articles on Lactic acid
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For a long time many people believed intense exercise caused your body to produce lactic acid and that this, in turn, caused muscle soreness. This is not correct.
Children’s muscles recover rapidly from high-intensity exercise, and kids can produce repeated exercise efforts when most of us adults continue to feel exhausted.


