If your heartburn worsens or only happens when exercising, it might be because the blood flow to your digestive tract diminishes during exercise, making your stomach and intestines work less efficiently, allowing the valve to open unnecessarily. Waiting approximately one hour to
workout after eating might help reduce your symptoms.
If you are prone to heartburn, check your diet. Many foods and beverages can make your reflux worse. Eliminate or limit caffeine, fried foods and spicy foods.