1. Eat a healthy breakfast
If you exercise in the morning, get up early enough to finish breakfast at least one hour before your workout. Most of the energy you got from dinner the previous night is used up by morning, and your blood sugar might be low. If you don't eat, you might feel sluggish or lightheaded when you exercise.
If you plan to exercise within an hour after breakfast, eat a light breakfast or drink something to raise your blood sugar, such as a sports drink. Emphasize carbohydrates for maximum energy.
And remember, if you normally have coffee in the mornings, a cup before your workout is probably OK. Also know that anytime you try a food or drink for the first time before a workout, you risk an upset stomach.
2. Size matters
Be careful not to overdo it when it comes to how much you eat before exercise.
Eating too much before you exercise can leave you feeling sluggish. Eating too little might not give you the energy to keep you feeling strong throughout your workout.
3. Snack well
Most people can eat small snacks right before and during exercise. The key is how you feel. Do what works best for you. Snacks eaten soon before exercise probably won't give you added energy, but they can help keep up your blood sugar and prevent distracting hunger pangs. Good snack options include:
4. Eat after you exercise
To help your muscles recover and to replace their glycogen stores, eat a meal that contains both protein and carbohydrates within two hours of your exercise session if possible. Good post-workout food choices include:
Don't forget to drink fluids. You need adequate fluids before, during and after exercise to help prevent dehydration.
To stay well-hydrated for exercise, the American College of Sports Medicine recommends that you:
Let experience be your guide
Keep in mind that the duration and intensity of your activity will dictate how often and what you should eat and drink. For example, you'll need more energy from food to run a marathon than to walk around the block.
When it comes to eating and exercise, everyone is different. So pay attention to how you feel during your workout and to your overall performance. Let your experience guide you on which pre- and post-exercise eating habits work best for you.