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High blood glucose after physical activity
When you exercise, your muscles need added glucose as a source of energy. In response to the demand from your exercising muscles, your liver pours an extra supply into your bloodstream. Remember, however, that the glucose can't be used by your muscles without the help of insulin to "unlock the door" to muscle cells; if insulin available isn't sufficient, your blood glucose levels can actually increase right after exercise.
To avoid problems:
- Check your blood glucose before exercising. Do not exercise if the reading is over 250 mg/dl and you have ketones.
- If the reading is 400 or more and no ketones are present, do not exercise.
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