Sports
Nutrition in Sports
Quick fact
Muscles store about 300–400 grams of glycogen, enough for roughly 90 minutes of moderate-intensity exercise. Without proper fueling, performance drops significantly.
Why this is interesting
You know that what you eat affects how you perform, but have you ever wondered why a sprinter's pre-race meal is different from a marathon runner's?
Read the full explanation
Understanding Nutrition in Sports
Think of your body as a hybrid car. Carbohydrates are the high-octane fuel for quick bursts (like sprinting), while fats serve as the efficient, long-lasting fuel for endurance (like jogging). Protein is the repair kit for muscles after exercise. Sports nutrition is about choosing the right fuel at the right time. Before a workout, you top off your glycogen tank with carbs. During long events, you sip fluids and electrolytes to replace what you lose through sweat. Afterward, you eat protein and carbs to rebuild muscle and replenish stores. The timing and composition of meals make a huge difference in how you feel and perform.
A deeper explanation
At the cellular level, sports nutrition works by supporting the body's energy pathways. During high-intensity exercise, muscles rely on anaerobic glycolysis, which breaks down glucose from glycogen without oxygen, producing energy quickly but also creating lactic acid. For longer efforts, aerobic metabolism uses oxygen to break down fats and carbohydrates, yielding more energy per molecule. Adequate glycogen stores delay fatigue, while proper hydration maintains blood volume and temperature regulation. Electrolytes like sodium and potassium are crucial for nerve signaling and muscle contraction. After exercise, the body is primed to absorb nutrients—the 'anabolic window'—to repair muscle fibers and restore energy. This is why sports nutrition isn't just about eating well; it's about strategic timing and composition that directly influence athletic performance and recovery.