Being physically active is one of the best things you can do for your health, but if you’re prone to heartburn, you might want to be more careful when choosing the type of workout you do. High-impact exercises, such as running, weightlifting, or cycling, can actually decrease blood flow to your gastrointestinal area and worsen the reflux symptoms. But it doesn’t mean you have to cancel your gym membership — just be sure to choose moderate, low-impact exercises, such as walking, yoga, or swimming.