Eating Before Exercise

A common question people ask is, "Should I eat before I exercise?" The answer depends on how much you eat, how long you wait before exercising, and the type of exercise you do. When a large meal is eaten, blood is sent to the intestines to pick up the nutrients from digestion. If vigorous exercise is attempted within a few minutes after a large meal, blood is sent to the working muscles and away from the intestines. This can cause nausea, cramps in the side, and general discomfort. On the other hand, a slow easy walk can be taken after a large meal without disturbing the digestive process.

It is best to have nothing in the stomach and intestines for 2 to 3 hours before high intensity, vigorous exercise. Drinking water is acceptable during this time to prevent dehydration. In a general sense, it is better to exercise first and eat later. But if you must eat before exercise is attempted, eat carbohydrate foods, such as fruits, vegetables, and grains. These foods are digested faster and more easily than proteins and fats. Carbohydrates will be removed from the intestinal system faster allowing more vigorous exercise to be attempted sooner.

Consult a registered dietitian for more specific information about the types of foods that can be eaten before exercise.

The specialists at Saint Vincent Sports Medicine offer PPT – Performance, Prevention and Treatment – strategies for athletes of all ages. For more information about the exercise that’s right for you, contact Saint Vincent Sports Medicine at 814-866-3466.

Disclaimer: This content is reviewed periodically and is subject to change as new health information becomes available. The information provided is intended to be informative and educational and is not a replacement for professional medical evaluation, advice, diagnosis or treatment by a healthcare professional.