During high-intensity workouts, carbohydrates serve as the primary energy source, fueling muscle contractions. They provide readily available energy through glycogen stores, ensuring optimal performance. Consuming carbohydrates before and during intense exercise can enhance endurance and delay fatigue. Post-workout, replenishing carbohydrate stores is crucial for recovery. Foods like bananas, sports drinks, or energy bars can be beneficial in maintaining performance levels during repeated bouts of high-intensity training.