As a performance physical therapist, I often get questions about how to properly fuel workouts and recover afterward. Nutrition plays a pivotal role in supporting your training goals, optimizing performance, and ensuring proper recovery. In this blog, we’ll explore the science behind pre- and post-workout nutrition, focusing on the role of carbohydrates, proteins, and other key nutrients.
Your body needs energy to perform at its best during exercise. Carbohydrates are the primary source of fuel for your muscles, as they are broken down into glucose and stored as glycogen in your muscles and liver. During exercise, carbohydrates help maintain blood sugar levels, ensuring a steady supply of energy to both your muscles and brain. This is especially important for prolonged or high-intensity workouts, where glycogen stores are rapidly depleted. Without adequate carbohydrate intake, your body may struggle to sustain endurance, leading to premature fatigue and reduced performance. When you exercise, your body taps into these glycogen stores to power your activity.
If your glycogen levels are low, you’re likely to experience fatigue, reduced performance, and even muscle breakdown. For high-intensity workouts, glycogen is the primary energy source, and its depletion can result in a significant drop in power output and endurance. In contrast, during endurance activities, glycogen depletion often leads to a phenomenon known as “hitting the wall,” where performance drastically declines as the body switches to less efficient fat metabolism for energy. Consuming a pre-workout meal or snack rich in carbohydrates ensures your glycogen stores are replenished and ready to meet the demands of your workout. Including a small amount of protein can also help stabilize blood sugar and begin muscle repair.
Here are five simple and effective pre-workout snacks:
Post-workout nutrition is all about recovery and rebuilding. During exercise, your muscles use glycogen for energy, and activity will create micro-tears in your muscle fibers. Consuming a combination of carbohydrates and protein after your workout helps:
For best results, aim to consume your post-workout meal or snack within 30-60 minutes of finishing your workout, when your body is most efficient at absorbing nutrients. Try to consume high quality protein, between 15-40 grams, close to the higher end based on the increased intensity of your exercise.
Here are five simple post-workout options:
Whether you’re preparing for a high-intensity CrossFit session, a heavy lifting day, or a long run, fueling your body with the right nutrients is essential. Pre-workout meals ensure you have the energy to perform at your peak, while post-workout nutrition supports recovery and muscle growth. By prioritizing these simple but effective nutrition strategies, you’ll set yourself up for success both in and out of the gym.
In good health,
Dr. Eliza Cohen
Performance Physical Therapist + Wellness Consultant
Wilmington, NC
Follow here for more performance and nutrition tips: @conquermovementpt @doctor_cohen14