For quick relief, pick up cinnamon flavored gum. When you chew gum, your salivary glands pick up the pace which can help neutralize stomach acid. On top of that, you'll swallow more and help clear the acid out of your esophagus. Lastly, choosing non-mint and non-citrus flavors ensures you don't trigger your acid reflux.
Exercise can be difficult after you eat if you have acid reflux. When your abdominal muscles contract, you can end up having food from inside your stomach reach your esophagus. Wait at least one to two hours after a meal before exercising.