Within this research, the effects of daily utilization of adequate quantity of re-hydration drink-apple and celery cocktail-on the endurance of welltrained athletes are determined. This drink contains up to 10% of carbohydrates (8.83%). The level of Ca is 130.52 mg/l, K-425.17 mg/l; Mg-25.15 mg/l; Na-48.16 mg/l and P-69.44 mg/l.