How Food Fuels Your Workout (2024)

Food provides much more for your body and mind than just satiation and delight: it gives you the energy you need to function throughout the day, helps repair muscle, provides essential nutrients, and fuels your body. The food you eat directly impacts your body's performance and recovery during and after a workout. Understanding which foods best fuel your body ensures you will get the most out of your workout.

This article will cover how food converts into energy, how food fuels workouts, and which foods are best consumed before and after a workout.

How does food convert into energy? How does it fuel the body?

Nutrition has a direct effect on your body’s performance and recovery. What, when, and how much you eat have a significant impact on the effectiveness of your workout.

All parts of the body need energy to work. This energy comes from the food we eat and is digested by acids and enzymes in the stomach. Carbohydrates are the body’s main fuel source during exercise, as they provide energy and facilitate muscle gain. When you consume carbs, they are broken down into sugar molecules called glucose, which is stored in muscles or the liver to be used as fuel for the body. The body either uses this glucose immediately or stores it for later use.

Carbohydrates are the body’s preferred fuel source for exercise. Carbs are more accessible, can easily be broken down into energy, improve performance, keep energy levels consistent, delay fatigue, and facilitate muscle gain. There are three types of carbs—sugars (simple carbs found in candy and desserts), starches (complex carbs found in bread, pasta, and some vegetables), and fiber (complex carbs found in fruits, vegetables, and nuts). You will want to consume starches and fiber before and after workouts, as these types of carbohydrates will provide your body with a more sustainable amount of energy. This includes whole-grain foods (whole wheat bread, oatmeal, and brown rice), fruits (apples, bananas, and berries), as well as starchy vegetables and legumes (lentils, peas, corn, potatoes).

Consuming an adequate amount of carbs before working out ensures there is enough glucose in the body and stops you from feeling weak, tired, and unable to fully exert yourself. Inadequate amounts of carbs will prevent you from getting the most out of your workout and may ultimately lead to muscle breakdown and loss. When your energy sources are depleted, your body will turn to fat or muscle nutrients as an alternative energy source. Your body will be forced to break down your muscles into amino acids (a type of protein) in order to obtain enough energy. This minimizes performance, prevents muscle gain, and is a direct result of under-fueling.

Your body also needs adequate amounts of protein to sustain energy levels and fix the muscle damage that occurs during exercise. Protein—nuts, leaner meats, eggs, Greek yogurt, etc—fuels workouts and facilitates recovery by providing the amino acids needed for muscle repair. Exercise creates microscopic damage in muscle cells, which are composed of proteins. The protein you consume helps repair these damaged muscle proteins and form new ones, which ultimately creates bigger muscles, making you stronger in the long run!

Which foods are the best to eat before working out?

When you work out, your body needs fuel from the right foods and hydration from the right fluids. Of course, this doesn’t mean sticking to a highly restrictive regimen. Rather, it’s about making sure you’re getting the necessary nutrients to maximize exercise performance and improve recovery time.

If you don’t fuel up before working out, your body might be forced to break down muscle mass in order to function. Instead of burning fat, your body will tap into the reserved muscle mass. To avoid this, eat a nutritious meal including carbohydrates, lean protein, and fiber 2-3 hours before a tough workout, or a smaller snack 30 min before a workout. For example, have Swapples topped with Revol Snax nut butter and bananas, or a parfait of non-fat Greek yogurt, fruit, and Sweet Kiwi granola. For an on-the-go and convenient pre-workout snack, grab a pack of Berg Bites. These combinations of carbohydrates and leaner proteins will give you enough energy to fuel your workout while also keeping you satiated throughout the day.

On the flip side, you should avoid eating foods that are high in fat, fiber, and refined sugar, as well as fried foods and dairy products. This includes foods like beans, burgers, fries, desserts, full-fat milk, or avocadoes. These types of foods are harder to digest, cause cramping, inhibit performance, and can lead to lethargy or fatigue.

What happens after we work out? What should we be eating?

Fueling up after a workout is just as important as fueling up before. This ensures that your body has enough nutrients for recovery and muscle repair, which is ultimately what makes you stronger and more in shape in the long run. After your workout, eat a snack or meal that is high in complex carbohydrates and healthy protein, like brown rice, quinoa, whole wheat bread, tofu, fish, beans, and chicken. The carbohydrates will restore the glycogen lost in your muscles during your workout, while the protein aids with muscle repair.

The foods you eat directly impact overall health, workout performance, and recovery. By making sure you’re eating the right foods, at the right time, and in the right amount, you will get the most out of your workout, improve performance, and in the long-term, become stronger and healthier. These recommendations should be taken as a general guideline for how to best fuel your body for your workouts—in the end, everyone’s body is different, has its own unique needs and preferences, and reacts to different foods in different ways. The best thing to do is listen to your body and figure out what eating habits make you feel and perform at your best!

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How Food Fuels Your Workout (2024)

FAQs

How Food Fuels Your Workout? ›

Carbohydrates are the preferred source of energy for the working muscles during exercise. Good sources of carbohydrates include whole grains (whole grain bread, whole wheat pasta, oatmeal, and brown rice), starchy vegetables (sweet potato, potato, corn, carrots) and fruits (banana, apple, strawberries)

How does food fuel the body for exercise? ›

When you consume carbs, they are broken down into sugar molecules called glucose, which is stored in muscles or the liver to be used as fuel for the body. The body either uses this glucose immediately or stores it for later use. Carbohydrates are the body's preferred fuel source for exercise.

How does food affect your workout? ›

A high-carbohydrate meal 3 to 4 hours before exercise is thought to have a positive effect on performance. A small snack one to 2 hours before exercise may also benefit performance. It is important to ensure good hydration prior to an event.

What foods will fuel your activity? ›

Ideally, fuel up two hours before you exercise by:

Eating healthy carbohydrates such as whole-grain cereals (with low-fat or skim milk), whole-wheat toast, low-fat or fat-free yogurt, whole grain pasta, brown rice, fruits and vegetables.

What foods fuel muscles? ›

Proteins, fats and carbohydrates are all possible sources of fuel for exercise and muscle contraction. During moderate-intensity exercise, roughly half of the energy is derived from glycogen, while the other half comes from glucose in the blood and fatty acids.

What foods fuel workouts? ›

Good snack choices include:
  1. An energy bar.
  2. A banana, an apple or other fresh fruit.
  3. Yogurt.
  4. A fruit smoothie.
  5. A whole-grain bagel or crackers.
  6. A low-fat granola bar.
  7. A peanut butter sandwich.
  8. Sports drink or diluted juice.
Dec 21, 2023

What if I eat 30 minutes before a workout? ›

The 30-minute limit gives your body a chance to digest what you've eaten to use it as a source of energy. If you eat and then get moving too soon, you'll feel sick. If you exercise, having eaten that full meal several hours prior, you may not have the energy to complete your workout.

What happens if I workout but don't eat enough? ›

Without enough fuel, you can't perform at your best. “When energy and intake is too low, it really cannot support the demands of health and high-level performance,” says Ansari. For endurance athletes, it means running out of gas more quickly while racing or out on training runs.

What foods to avoid if you workout? ›

Here are 11 types of food and drink that Wiener advises avoiding pre-workout, plus his snack swap recommendations:
  • Fibre-filled foods. ...
  • Energy drinks. ...
  • Nuts. ...
  • Cruciferous vegetables. ...
  • Refined sugar. ...
  • Ready meals. ...
  • Dairy. ...
  • Fried foods.
Jan 18, 2024

What happens if you exercise but eat unhealthy? ›

Whether you work out longer or at a higher intensity, exercise can't completely reverse the effects of a bad diet, expert say. There's also an increased risk for premature death if you exercise but neglect healthy eating.

What diet is best for the gym? ›

A protein-rich food: Protein helps to build and repair muscles. Good protein sources include meat, fish, poultry, eggs, dairy, beans, soy, and nuts. 2. A carbohydrate-rich food: Carbohydrates provide energy for your body and help to replenish glycogen stores.

What is the major food fuel during exercise? ›

Carbohydrates are the preferred source of energy for the working muscles during exercise. Good sources of carbohydrates include whole grains (whole grain bread, whole wheat pasta, oatmeal, and brown rice), starchy vegetables (sweet potato, potato, corn, carrots) and fruits (banana, apple, strawberries)

What foods make you physically stronger? ›

To maximize muscle growth, a clean bulk is better than simply eating high calorie foods. This may include a well-balanced diet of healthy fats, carbohydrates, and proteins. Some foods include chicken, shrimp, eggs, salmon, brown rice, quinoa, sweet potatoes, and fruits.

What are 5 body building foods? ›

Muscle-building foods
  • Eggs. A boiled or poached egg contains 6.28 g of protein. ...
  • Chicken. A medium chicken breast without skin weighing 120 g contains 35.5 g of protein. ...
  • Turkey. ...
  • Greek yogurt. ...
  • Cottage cheese. ...
  • Salmon.
  • Tuna. ...
  • Milk.
Mar 31, 2021

How many eggs should I eat a day? ›

For most healthy adults, it's safe to eat 1–2 eggs a day depending on how much other cholesterol is in your diet. If you already have high cholesterol or other risk factors for heart disease, it may be best to eat no more than 4–5 eggs per week.

How is food considered a fuel for our body? ›

Nutrients are like fuel for your body. They give you energy. And they keep your heart beating, your brain active, and your muscles working. They also help to build and strengthen bones, muscles, and other body tissues.

What is the main source of fuel for exercise? ›

Thus, the major sources of energy during exercise are carbohydrates and fats. Sources of carbohydrates for the muscle include blood glucose, muscle glycogen, and liver glycogen. Glucose and glycogen are converted to glucose-6-phosphate before they can be used to generate energy.

How does food become energy to fuel our bodies? ›

Foods contain a lot of stored chemical energy; when you eat, your body breaks down these foods into smaller components and absorbs them to use as fuel. Energy comes from the three main nutrients carbohydrates, protein, and fats, with carbohydrates being the most important energy source.

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