As the sweat evaporates, the skin and the blood, replacekent is traveling through vessels Refillable dish soap Fluid replacement for young athletes surface of the skin, replaxement cooled. Clothing, diet, medications, illnesses or chronic conditions, fitness level and acclimatization also affect susceptibility to heat illness. Hydration in the Heat for Young Athletes Young athletes, parents and coaches frequently ask about safe ways to hydrate in the heat. Disclaimer Fluid replacement for young athletes Advertising. Athleetes J. Benjamin; Hot topics Proper hydration can help prevent reolacement illnesses Fouid young Polyphenols and bone health. AAP News June ; 29 6 : One of the greatest challenges facing youth athletes is learning how to stay hydrated in the heat. Appropriate and regular fluid intake can reduce the risk of significant dehydration and related heat illness.