If you are having an acute flare-up , stop exercising until a couple of days after symptoms subside. Before you begin again, touch base with your physician. Dehydration can occur in people who suffer from frequent loose stools, excessive ostomy drainage, fever, or vomiting. Drink 300 to 500 mL of cool water 30 minutes before exercising and 240 mL every 20 minutes during exercise. Afterwards, drink even if you are not thirsty.
Sports drinks can replace salt and potassium as well.
Avoid caffeine and alcohol, as these increase urine output. If you experience these symptoms, cool down immediately and contact your physician. In the winter, insulate yourself with several layers. If you have an ileostomy , make sure the appliance is secure. Use extra tape or a support belt if necessary.