Final answer:
The statement is true; during a workout, individuals should consume fluids based on their personal sweat loss to prevent dehydration and maintain hydration levels.
Step-by-step explanation:
The statement that the amount of fluids to consume during a workout will depend on the sweat loss of each individual is true. When you exercise, your body temperature rises and, as a result, your body sweats to dissipate the excess heat. Since the body produces heat which must be regulated, perspiration is a natural response to help cool the body down. Sweating depletes your tissues of water and increases the solute concentration, leading to the movement of water from your blood into sweat glands and surrounding tissues due to the osmotic gradient. If excessive sweating continues and fluids are not replenished, dehydration can spread throughout the body.
On a typical day, an average adult consumes and loses about 2500 mL (almost 3 quarts) of water, with losses occurring through urine, skin evaporation, and expelled air from the lungs. During a workout, these losses can be significantly higher due to increased sweating. Therefore, to prevent dehydration, individuals need to consume fluid to match their sweat losses during exercise.