Sustenance that can replenish energy after prolonged endurance activities includes carbohydrates, proteins, and electrolytes. Foods like bananas, energy gels, and sports drinks help restore energy levels. Consuming these nutrients post-activity aids in glycogen replenishment and muscle recovery. Additionally, hydration is crucial, as fluids replace those lost through sweat. Optimally timing nutrient intake within 30-60 minutes after exercise maximizes recovery, ensuring energy is renewed for future workouts.