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Allen Smith asked in SportsRunning · 10 years ago

when i Run my left leg tightens with painful ache within the first 200 mt is it comeing from my back?

1 Answer

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  • Anonymous
    10 years ago
    Favorite Answer

    It's lactic acid that is building up in your muscles because of lack of oxygen.

    or maybe you have a hamstring problem so when you sprint it makes it worse.

    chck with your Gp

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