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1 Insulin sensitivity is increased, so your cells are better able to use any available insulin to take up glucose during and after activity. 2  When your muscles contract during activity, it stimulates another mechanism that is completely separate of insulin.
Low levels of potassium can cause sodium sensitivity and an increase in blood pressure. Potassium also affects insulin levels. When potassium levels are low, there is a reduction in insulin secretion. A very low level of potassium causes a condition called hypokalemia.