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  • Q&A with Australian Health Practitioners

    Why is there a spike in my blood sugar levels after exercising?

    I usually take a measurement 10-15 min after exercising and somehow my levels are high. Why is this
  • Find a professional to answer your question

  • 1


    Chris Fonda

    Dietitian, Nutritionist, Sports Dietitian

    As an Accredited Sports Dietitian, APD and athlete (springboard diver), Chris has both professional and personal experience in sport at the sub-elite and elite level.Chris … View Profile

    This is a strange one as blood sugar levels usually go down during exercise because there is an increase in the number of insulin receptors. The reason why your blood sugar levels may be high after is because of the release of the hormone “adrenaline”. Adrenaline causes the release of stored sugar in your muscle (glycogen) to use to provide your body with energy. Adrenaline is often released during strenuous exercise or in times of panic or danger (fight or flight response). 

    Try waiting a little more longer before checking your blood sugar levels (aim for 20-30min) you may see different results. If you are still concerned its best to consult an Accredited Practising Dietitian (APD) you can find one close to you by going to

    Let me know how you get on.

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