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This is Dr. David
the 5 mile bike ride sounded like it was too much.
you could have low potassium or low magnesium in your blood system which can cause spasms.
you might need a muscle relaxer like baclofen or fexeril to decrease the muscle spasms.
you should make a sooner appointment than mid august.
or you can go to the ER to see a doctor about your spasms in your leg.
have you tried adding more fluids and electrolytes and potassium and magnesium into your diet?